One silly thing Irina and i never got around to doing back in Britain was going to Bingo. Although it may not seem like the sort of thing we would normally try out, we wanted to try it once. Occasionally, at least in the UK, halls will offer a games of free bingo to entice people into becoming members. In the UK, unlike if you play bingo online, you need to register as a member and then wait 24 hours before you are allowed to play!
Anyway, online bingo has become a popular way for some people to gamble, and as long as they only play with money that they can afford to lose, there is no real harm, assuming you do not have an addictive personality. If you just want to pass some time, many sites offer free bingo, where there are no real cash prizes, but no money is required either.