Don't know what kind of music you're making using the modules. Some general advice for a secondary rack. A nice modular sequencer would be a good choice, some of them have a distinct workflow that differences a lot from the normal standalone one. Good effects with modulation is also a good idea.
There's a sampler by 1010 music in the rack, but if you're interested in some hard music, dance music, try some analog kick and hihats.