This is another example of the awesomeness of pinterest. I love all the great ideas that are to be found there, especially when they're as simple as today's activity (which comes from here).
I've collected a few paper tubes from paper towel rolls and toilet paper rolls as they've become available so that when I had enough we could do this. The prep work is pretty simple, you just cut your tubes into pieces and give them and a muffin pan to your little one and you're good to go. Toddlers love to put objects into things and take them back out again (especially the taking out part!).
This activity takes advantage of that built in desire to put in/ take out, and builds hand eye coordination and fine motor skills at the same time.