easy toddler activity

It's not always easy to find something nice to do for Yotam. He's one year and 4 months old and mostly keeps himself busy with all kinds of things (mostly dadys tools....), but sometimes he just wanders around. He's too small yet to really play with his sisters.
I found this nice and simple (and cheap) activity here and tried it today. I stuck two paper rolls to the fridge (lovely scratches, no :o) and gave Yotam pompoms (he loves them anyway) and wooden cubes to let them fall through the tubes. Later I added two more rolls, arranged in an angle.

Later on the girls plaid too and of course all pompoms got stuck (I mean- how many pompoms can you stuff at one time into the tube....)...