if you plan to stay longer you can take monitor, projector, Bluray player/PS4, spare clothes, water purification system (Reverse Osmosis portable system, cost's about 200 bucks), good masks, etc. etc. Things that you will use while you are here. If you don't plan on being in Nepal for more than a month, then do as others said, if you want to bring something unique - a dead hooker? ;)