When a bowl of nuts or potato chips is set out.. I notoriously take one. The problem with doing that with vegetables is that they often dry out. Here is a quick solution. I cut the bottom off of a bunch of celery, I wash the stocks and cut the tops off. I stand them in a tall plastic container about half filled with water. The celery will stay crisp all day.. and if you forget to put it away at night.. It will be OK the next day.
I notice I eat a lot more celery this way.. and hopefully less chips.