Nothing too fancy on my Dahon Jack:
Cannondale Bad Boy grips (with the right side poorly cut down to accommodate the shifter)
MKS FD6 folding pedals
Topeak Explorer Rack (w/ an MTX DX bag to go on top)
Blackburn Mars 3.0 in the back, Voyager 3.0 in the front
the obligatory no-name bottle cage
The rest is stock, for now...