I have 2c (with some 3a spirals) hair, and I've found that pineappling at night under a silk sleep cap makes my hair have more bounce and volume for the 2nd and 3rd days.

I tried using the cheaper satin sleep caps from Sallys, but there were too tight and uncomfortable, so I caved on a silk one, and love it. I bought it from here:

Silk Bonnets

Hope that helps!
Mod-CG since December 2010.
Hair type: NC: 2A; FIA: 2cFii; Fine, normal porosity, normal elasticity
Cleansing: CJ Cleansing Conditioner, Trader Joe's Tea Tree, or Deva No Poo
Daily conditioner: Deva One C or CJ Beauticurls Strengthening Hair Cond or GPB
Styling products: Deva B'Leave In + Deva Curl Cream + AnGel; or
SS CEJ + BRHG; or AG: Recoil + BRHG; or KCKT + KCCC + BRHG
Treatments: SS protein treatment or CJ Curl Fix or Nexxus Emergencee + CJ Curl Rehab