I just want to preface this is purely for entertainment and fun.
a few instruments for your consideration

Polivock synth
aelita synth
juno 6
juno 106

if you guys do drum synths at all? you could.
March Uds
lell uds
rokton uds

fun fun fun. if you want to you can even write tutorials on how to write synths under lmms so that I or we may develop the following
Moog memorymoog
prophet 5
a few vox synths
korg ms-20


THanks for your time and consideration, have fun