Lucky you. Don't have books or musical instruments? Those two are the biggest blockers for me. Furniture and kitchen stuff is easy to give away and buy again.
Edit: Things could be worse though. I play guitar, not drums. :)
I have instruments: some midi controllers and 2 audio monitors to go with it. I found a perfect sized bag that can fit it all, along with my computer stuff. I just have that bag, a big suitcase of clothes, and my carry-ons.
I do have books but not too many, and I don't take them with me. I keep most of my stuff like in long term storage (my parents basement).
Edit: Things could be worse though. I play guitar, not drums. :)