There's no need to resort to plain rubber bands and damage your hair in the name of convenience - here's a quick and easy bun slide you can make using basic office supplies and one of those spare cards you're certain to find in your wallet.
I've worn this one at work all day, and it's kept my hair safely up and away from my 6-month-old's grabby fingers. Success!
Step 1: Find a card
*I'd recommend against using credit cards for security reasons, but otherwise go to town.