Should I be giving presents to the kids I babysit?

I get gifts from their families (chocolate or inexpensive bath stuff from the one, but a theatre ticket from the other, last year). I feel closer to the family that gave me the ticket, and would be leaning toward giving them something. The child, at least. Trouble is, the boys are in the same class. They’d talk about it.

The kids are nine, ten and five.