Anyway ... I heard somewhere (I can't remember where - I could have just made this up) that playing with and experiencing foods of different textures would be good for Ben's development. Yogurt would have been a good choice, but I had no yogurt. I did have half a box of chocolate instant pudding.
I made the pudding, put a big glob on the tray and gave Ben a spoon. Here's what happened:
Needless to say, I added "bath for Ben" to the to-do list. And once he was clean, I cleaned the booster seat. :)