Here is a simple way to do a trendy craft that can not only get expensive, but a little dangerous: String Art.
Typically, you would take a piece of wood and draw a shape on it. You would then use a hammer to add nails along your drawing. Then wrap string around each nail to get this:
Truth be told. If I tried that. It would be a #pintrestfail. So here is my child proof hack!
Paint to decorate
Hot Glue Gun (optional)
1. Cover your box with Canvas Paper and sketch a simple design
2. Help your child poke thumb tacks along the design
3. Tie a knot around the first thumbtack and wrap the string around each thumb tack
4. OPTIONAL hot glue the tacks down for extra stability
5. Paint and decorate away!