The activity set up is easy, and, if your house is like mine, you already have all of the supplies on hand. I took a glob of Play-Doh and stuck some pasta on it. I had angel hair pasta, and it worked fine, but spaghetti probably would be stronger (some broke during the activity, but it wasn't an issue). Then, I sat Oliver down and asked him to thread Cheerios onto the pasta. He jumped right into it!
After two or three minutes, he "mastered" the threading and then moved on to removing the pasta noodles and replacing them. I realized that I probably just should have let him do the pasta part initially. Some pasta noodles broke, and Oliver learned you can't just fix them.
After he re-situated all of the noodles, Oliver threaded more Cheerios. Then, it occurred to him that Cheerios are also for eating. He stopped playing and chowed down!
"Stacking Cheerios" didn't keep him entertained for all that long (maybe 15 minutes), but it was so easy to set up and clean up, that it was worth those 15 minutes of fun. Plus, I'm likely to always have the supplies on hand, so it's an activity we can easily do when boredom strikes. The ease of the activity makes it a good one, so I give this an A-.