The idea library

Pull a bin, take an idea.

535 preschool activity ideas. I read every one before it went in, and any of them is yours to take. When you want one written up into a full lesson plan, built around your age group and framework, tap Plan this one. Planella writes it up, ready to customize, in about a minute.

Free · no sign-up

Block center & building ideas for preschoolers

These are 30 block center and building ideas for toddlers, preschoolers and TK. Some add one thing to the block area, like tape roads across the floor, a mirror behind the tower or a photo of a real building. Others change what there is to build with, like cardboard boxes, coffee cans or tree slices and branches. Tap Plan this one on the idea you'd try first and Planella writes the lesson plan to go with it.

  • Marshmallow and toothpick towers

    Mini marshmallows for the corners and toothpicks for the sides, joined into squares, triangles and towers.

    Plan this one →
  • Fix the broken road with a detour

    A section of the tape road pulled up overnight, and bridges, detours and cones built to get the cars through.

    Plan this one →
  • Build with only one block shape

    The other shapes put away, only the long ones or the small squares left, and the whole build made from those.

    Plan this one →
  • Big block fort you can sit inside

    Hollow blocks or big cardboard ones stacked into walls, with a gap for a door, until a child fits inside.

    Plan this one →
  • Stack the tree slices and branches

    Wood slices and chunks of branch beside the blocks, bark still on, every one a different size and a little bit wobbly.

    Plan this one →
  • Coffee cans and yogurt cups for building

    A bin of clean coffee cans, yogurt cups and boxes beside the blocks, stacked and balanced until they slide.

    Plan this one →
  • Build the shops and houses in your neighborhood

    Photos of the shops and houses near school taped up by the blocks, and the doors, windows and signs built in.

    Plan this one →
  • Put a mirror behind the tower

    A plastic mirror propped behind the blocks or laid flat under them, and a tower that doubles as it goes up.

    Plan this one →
  • Magnetic tiles on the light table

    Translucent tiles clicked into towers and boxes on the light table, and the color that spills out around them.

    Plan this one →
  • Egg carton blocks the children paint

    Egg cartons cut into sections so the bumps nest together, painted by the children, and stacking by the next day.

    Plan this one →
  • Photo people for the block area

    Head-to-toe photos of each child cut out and taped to a toilet paper tube, standing up among the buildings.

    Plan this one →
  • Animal walks between the bin and the tower

    Blocks in a bin across the room, and an animal called out each trip, so they hop or stomp over and carry one back.

    Plan this one →
  • Pool noodle car ramps at different heights

    A pool noodle cut in half the long way, taped to a tower of blocks, and the same car run from higher and lower.

    Plan this one →
  • Tape roads across the floor

    Painter's tape laid out in streets and intersections, and the block city that grows up along them.

    Plan this one →
  • Load the tower with animals until it tips

    Toy animals set on a block tower one at a time, and the tower rebuilt after every crash to hold one more.

    Plan this one →
  • Paper bridge loaded with pennies

    A strip of paper laid across a gap between blocks, pennies added one at a time, then the strip folded and tried again.

    Plan this one →
  • Bridge between two block towers

    A rain gutter or a long strip of cardboard laid from one block tower to the other, and cars sent across.

    Plan this one →
  • Build from a photo of a real building

    A photo of a real building propped up by the shelf, and the arches, windows and roof that turn up in the build.

    Plan this one →
  • Build the place from the book

    The house, the bridge or the woods from the story, built in blocks on the rug while the book is still open.

    Plan this one →
  • Chalkboard blocks drawn on and wiped off

    Wood scraps painted with chalkboard paint ahead of time, and a window, a door or a sign chalked onto each one.

    Plan this one →
  • One child describes, the other builds

    One child says what goes on next and where, the partner sets it down, and they trade when the building is done.

    Plan this one →
  • Match blocks to their traced outlines

    Unit blocks traced onto big paper at full size, and each block found and set back down on its own outline.

    Plan this one →
  • Velcro blocks that grab each other

    Velcro dots stuck onto foam blocks at nap time, and a tower that holds together when you lift it.

    Plan this one →
  • Stamp and print with blocks

    Foam or plastic blocks pressed onto a paint-soaked sponge, then stamped on paper, and the shape each one leaves behind.

    Plan this one →
  • Cardboard boxes as giant blocks

    Shipping boxes stuffed with newspaper and taped shut, stacked into walls and towers as tall as the children.

    Plan this one →
  • Block zoo with a pen for each animal

    Blocks built into pens for the zoo or farm animals, a gate on each one, and which animals go in together.

    Plan this one →
  • Blocks wrapped in tape, sticky side out

    Masking tape wrapped around each block sticky side out, so the blocks stick where they touch and a tower can lean.

    Plan this one →
  • Put a roof across two walls

    Two walls with a gap between, and a long flat block laid across the top for a roof, with a room underneath.

    Plan this one →
  • Bowling with blocks for pins

    Blocks stood on end in a triangle, a playground ball rolled from a taped line, and a count of how many fall.

    Plan this one →
  • Block shadows on the wall

    A lamp on the floor pointing at the blocks, and a shadow on the wall that changes shape every time a block moves.

    Plan this one →

The bins keep growing

New ideas go in all the time. If your class loves an activity that isn't in a bin yet, send it my way. I read every idea that comes in, and the ones that fit join the library.

These ideas come from the real world of preschool. I read each one and chose what went in, one at a time. No idea here was invented by AI. Newest ideas added September 2026.