Some plants of interest to me are,
Tabernanthe sp.
piper sp. (kava would be great now that the ban has been lifted)
v.africana a few different viridis cultivators or just a few leaves of each for propagation
mansoa alliacea
e.australe
m.pudica
a.courtii
a.obtusifolia
a.siplicifolia
tropicals (mangrove plants, vines, ornamentals, beehive gingers, strangler fig, anything that's cool and unusual)