Wouldn't Veggie Man be fun for the kids to put together? I think they would love it. Just have a photo of Veggie man for them to look at! Who knows, they might even eat a vegetable! Feeding Four Little Monkeys
Pasta skeletons - Kids can bone up on anatomy and create a fun Halloween decoration at the same time when they make a skeleton out of noodles. With an illustration of a skeleton as a guide, they just need lots of dried pasta, white glue, and constr.
Snowflake or Christmas ornament made out of noodles & spray paint (how to make christmas tree ornaments Christmas crafts for kids pasta -- spray painted gold, silver, or white or glittered would be pretty too).