What exactly is the model of your amp?

My favorite effects pedal would be a chorus pedal. I use the Boss CH-1 to be specific. A cheap multi-effects pedal might help you decide what effects you will actually use and which ones you won't use. When I first got into effects, I started out with a Digitech RP100 then moved to the RP2000, then went with a POD Pro, and then a Boss ME-50, and then went to using a good tube amp and individual pedals, and am much much happier now.