The adults in the family each get an $80 slush fund for whatever we want, and it often goes to eating out without the kids, but also covers personal expenses that we just don't want to run through the budget -- hobbies, fancy beer, books, random personal expenses.
We have a $60 family entertainment budget, which will cover either a movie and snacks for the five of us (if we go to the cheap theater) or some other outing. We don't always use this, so it rolls over to the next month.
We have a $100 annual membership to the science center, which we use frequently. It also gives us free access to similar museums when we travel, so it works out well.
Our shared hobby has some expenses, but I don't have a good handle on those. Our car gas is high year-round to get to semi-weekly meetings and during the busy season we travel on weekends and eat out more than usual, but our base organization pays for hotels. I haven't done the work to try to budget for it, so we just try to keep the expenses down and adjust as they come. When we move this summer, those expenses should drop dramatically because everything will be a bit closer and not require as much road time and overnight trips.
Writing this out, it sounds like a lot, but it sure doesn't feel like it when we're struggling to keep to the budget. :)
* No, we don't give gifts for Easter. If we remember it at all, there's chocolate, jelly beans, and dyed hardboiled eggs for an egg hunt. But we're unusual in our area, I think. The stores are packed with giant shrink-wrapped Easter baskets right now. Surely someone is buying them.