theres about 142 million things you could get. everything from shakers to bells to guiros to tambourines to effect ctmbals to differant types of effect drums to a bunch of hand drums. lots and lots and lots to choose from. i guess the question is, what genre are you really looking to use these in. you working on african rythms, latin, salsa, samba, greek dance, cuban, afro cuban, baiao.
world music is a very broad spectrum. lots and lots of differant percussive instruments are the staples of cirtain world genres. so if theres a specific genre then you just have to find out what the main instruments used in that genre
COnga and bongos. Learn to play them right and you can also be a percussionist and have another job opportunity! Don't overlook getting some tambourines! It isn't just for the drunk chick to play badly; tastefully played tambourine can really add to a band's sound or a song. Just listen to any motown song or any Johnny A track!
I have expanded my set with some Treeworks chimes, Toca timbale snare, Toca jingle snare, some jam blocks, a tapon cowbell, an UDU, a cajon, vibraslap, flex-a-tone.....
I'm still trying to figure out a comfortable setup to use it all consecutively.
There is a world of stuff offered from LP alone to expand your tonal flavors.