Depending on the size of your tank, a small powerhead can supply a nice localized current for the bamboo shrimp. You would need to put a filter on the intake side (sponge/mesh/etc.) to prevent the RCS from getting in there, but this is a nice way to have a horizontal flow that the shrimp can sit in front of. Again SMALL PH, preferably an AquaClear or similar as they have a variable flow setting so you could put it on low.
I have an AquaClear PH I use as a CO2 diffuser, and it would be perfect IMO as the current is very low.