This just popped into my head
In my wardrobe there is a tin in which I keep a stash of bubblegum. I have it for those times when I feel anxious or when I need to focus. It's also for those times when I just feel like putting a piece or two in my mouth and obnoxiously blow and pop bubbles (but usually when I'm alone because I don't want to annoy anyone).
Yes, I am probably a bit too old to be still enjoying inflating enormous orbs of gum. But when everything is serious, you need a bit of silliness in order to keep yourself sane. There are few things more silly and fun than blowing a bubble so big that it explodes all over your face.