You can put a Sprint Touch Pro on PagePlus which is a MVNO using Verizon. There's a number of people that have done it and is my next project. For $29.95 (that's it - no tax, fee's, etc) I get 1,200 minutes, 2,000 text and 100 mb data. If that works for you check out the link to see what's involved:
Sprint Touch Pro On Verizon Network Tutorial - ppcgeeksproject