DIY Cross Stitch Sweater Tutorial from Uber Chic for Cheap. She picked a sweater with a waffle pattern - a kind of ready made grid. She also lists lots of cheap cross stitch sweaters if you don’t want.
Fun art project with the kids! Easy abstract painting that anyone can do! Just blob the paint on the canvas in random spots and blend! (would be interesting how students could make different pictures w/ the same colors and same blob positions)