To make a cardboard chair, you will need:
Ruler, yardstick, or measuring tape
Clear finish (polyurethane)
Find a sturdy square cardboard box. Spread glue along the inside surface of each of the four flaps. Press each flap inside the box to glue it to the inside walls of the box. Flip the box back onto its base and allow 2 hours of drying time.
Overturn the cardboard box so that the bottom base is now on the top. Measure the base of the box to find its length and width. Use a ruler and pencil to draw a square of the same length and width onto a piece of scrap cardboard. Create a total of 6 cardboard squares of the same size.
Spread glue onto the base of the box. Place the first square cut-out directly on top of the box base. Repeat with 5 of the square cut-outs. Press each square cut-out down firmly and wipe any excess glue with a paper towel. Allow at least 2 hours of drying time.
Use the last square cut-out to make the back of the chair. Spread glue along the bottom edge of the square cut-out, approximately 1-inch in width. Press the bottom edge onto the back of the square box. Give the chair 2 hours to completely dry.
Paint the chair with acrylic or tempera paints, if desired. Paint 2 to 3 coats of paint and allow 2 hours of drying time in between each coat. Apply a coat of clear finish over the dry paint. The clear finish should only be done by an adult or with adult supervision. Decorate with stickers or other craft items.