lol @ overrun by teenagers; we were for a bit there and then the admin decided to go 18+ and it has been a breath of fresh air ever since.

Well since you can't get to the shop, your best bet for the moment is to manually remove any of the tiny larvae that you find on the leaves. Carnivorous plants won't help, since the bugs really stay right there on the plant rather than flying all about the room.

As SOON as you can, try to get to the shop- bombs are pretty cheap compared to the hassle of dealing with home-brewed bug sprays, that often contain stuff like garlic that will make your buds taste filthy. Plus thrips can be tough to kill.