In your Opinion which effects are the most supporting additive for an acoustic bass?

I need some inspiration for my "acoustic setup" and i am quite a beginner with adding effects.
Is there any special effects for an acoustic bass or can i go and get me some from the electric bass and guitar section?
Really have to spice things up without ruin the "acoustic flavour" to much!

Any suggestions?
Reverb goes great with pretty much anything.
"Maybe this world is another planet's hell?" - Aldous Huxley