In honor of the expiration of the lego patent, I give you my version of toy construction bricks made out of paper card stock. These could also be made out of cardboard packaging that you would otherwise throw away.
Step 1: Tools and Materials
a craft cutter (or scissors and a great deal of perseverance)
bamboo skewers or drinking straws
forceps for holding glued edges together while drying
fine point glue applicator bottle
clamps that can open up to 2" wide
Step 2: Brick Patterns
I've added several different designs below. All of them were intended to be printed so that the long rectangle is 2 inches long. Some are one inch thick in the other direction. Some half an inch. Some are suitable for bamboo skewers, some for drinking straws and one suitable for toothpicks. And another with no holes at all.
I tried many variations on the folding patterns. All of them have their pros and cons. Some are easier to glue, but harder to keep square. Some just the opposite.
Step 3: Paint First
Step 4: Allow Paint to Dry
Step 5: Fold and Glue
Apply a thin light amount of glue along the longest tab.
Clamp tab and side together till dry.
Then complete by applying glue to the remaining tabs.
Finish assembly, clamp and dry.
Step 6: Clamp and Dry
Clamp them so they are as square as can be, allow to dry.