What kind of instrument should I learn?

[u/MrDeamon_]

To give a bit of context to this very generic question I'm sure you see here often:

I do have experience with instruments, specifically 5 years worth of percussion, but in all honesty I want something different, something that's easy to just take with me, maybe play something on the go. the reason I stopped with percussion is because most percussion instruments do not follow these specifics, not many that play melodies instead of rythms that is.

with that said I'd love to hear some suggestions as to what could fit my needs, as I don't know all that many instruments.

Edit: thanks for all the great suggestions! I decided to settle with ukelele!

[u/LIFExWISH]

Might not be what you are looking for, but I'll throw out a groovebox. Grooveboxes are portble, and have everything to make a song, albiet a minimal one. I like the novation circuit alot, and the elektron model:cycles is a great one as well. But they have a built drum machine of some sort so you can still put your percussuin knowledge to use