We love to make homemade peanut butter!
Starting with peanuts still in the shell is a great activity for kids of all ages. As a preschool teacher, I used this activity to exercise the fingers and work on hand muscle coordination. Shelling enough peanuts for peanut butter is hard work, but the kids love it (and it's economical too)! I always double check to make sure that no shells get in the peanuts. In my little food processor I add about a Tablespoon of oil ( peanut oil is preferable, if you have it) for each cup of peanuts. If you want the exact measurements, the web has tons of recipes!