These unbreakable blocks have flexible bristles that interlock when pushed together and they stay attached until they're pulled apart for no-fail building every time.

They come in lots of shapes and sizes and each set includes green, blue, red and yellow blocks. The larger sets even include people figures.

The smaller set is perfect for beginning builders.

Great first set of blocks for toddlers!  These soft colorful foam building blocks are great for the young builder.  They are ideal for building with them on the floor or in the bathtub, as the blocks float and they also easily stick to bathtub tile walls when they are wet.

As your child's imagination grows, so does the play value of these hardwood blocks.  Solid wood box comes with 60 blocks - all sanded smooth for safe play - and all perfectly related in size for easy building.

Let your child's imagination do the building with these Lego sets, which include plastic blocks that snap together.

Lots of sizes and shapes for limitless building possibilities. Container included for easy storage, too!

Add the up-to-date figures from the Community People Set to populate Lego towns and allow your child to explore gender, age and different roles in society.

These chunky magnetic vehicles are as much fun to build as they are to play with!  Mix and match pieces stick together in endless combinations so kids can create their real life vehicles or something from their imagination.  This set includes 27 pieces.

Action-filled marble mazes that kids make themselves!  Just fit the rugged pieces together, load the marbles on top, and release the lever...

...then watch the marbles twist and turn down the track!

These building sets from Learning Resources allow children to experiment with simple mechanics with easy-to-assemble pieces. The beginner's set is a great first construction toy.

Heavy-duty plastic gears spin and twirl together in a colorful display that kids will find fascinating. These sets include gears, pillars, crank, connectors and interlocking bases for endless building fun.