Easy and fun.Velcro + popsicle sticks make for great quiet time or restaurant activity. Put velcro dots on the ends of popsicle sticks. Kids can make letters or shapes over and over again. I found velcro dots at my local dollar store.
LOTS of Discovery Bottle Ideas==liquid and dry content discovery bottles were a huge hit for more than twenty years in my home preschool/daycare. Hint: superglue the lids! Most eventually try to open the bottle.