Here's a super-quick project that's kept my boys entertained today. I call it a busy bottle. (The idea for this might be floating out there in cyberspace, but I dreamed it up on my own, so let me be happy with myself, ok?)
I do things in twos around here: change two diapers, get two bottles ready, give two baths... you get the point. So I made two of these in about 5 minutes.
I started with empty water bottles. I filled them 3/4 of the way full with baby oil (I thought the items would float slower in baby oil than water, but it turns out the baby oil wasn't as thick as I thought it would be, so it didn't do much, other than bubble when it's shook up.) Then, I added some goodies. From my craft room, I took small beads, felt pom-pons, and foam shapes. I put them in the bottle, and then I added water to fill it the rest of the way up. I ran a line of hot glue all around the top of the bottle, which holds the lid on tight, so none of the small items escape.
So far, the boys are occupied!