Forced to babysit?

It is okay if you have fun while you are doing the job.. but remember you are there to do a job 1st ... having fun comes 2nd. So Play with the kids.

1. Read.
2. Hide & seek
3. Guessing game.
4. Test taste game.
5. Follow the dots. Make a bunch of dots so they lined up. Each take a take connecting the dots, one dot @ a time to make a square. Put your initial when you've made a square, and go again, until they're all connected. It was a game I played when I was little, and it's still a game I play with my 7 years old Grand DD.
6. Tic tac toe.

You can tell your dad to pay some for the cost of living and somemore for childcare gas

just try to have fun, babies are cute

Whenever people are faced with something they don't want to do, I tell them to take it as a challenge, and to test themselves to try and be the best at it (but the challenge is already overcome, as they have tried it!)
Think of it as a few hours of your time, that is all =). I'm not sure how old the children are, but try and put yourself into their shoes; what did you find fun as a child? Sometimes being with younger people and reliving old childhood memories is already fun in itself.
Best of luck =)