Reply to Indoor crafts for 3 year old boy.

Stickers. Cutting paper or play dough. Stamps. Car art- roll toy cars in paint and then on paper. Chalk. White board markers, place paper with shapes or letters to trace in a page protector or laminate it and let him practice tracing or drawing, then erase and start over. If he likes legos, make paper legos that he can glue on paper to build a design. Other ideas that are not crafts: sorting toys or objects around house based on one or two characteristics. Focus on vocabulary and describing similarities and differences between objects. Practice kicking a soccer ball or throwing a small foam ball. Matching games are great. abcmouse.com and leapfrog have great teaching interactive sites for preschoolers.