Druid Powerleveling - best method?

[beev]

I've got a 43 Druid and of course I want to utilize him to help power level some friends from time to time. Any experienced druids here that have a good method and/or ideas on the best places for power leveling from level 1-30 let's say?

I've heard of things like spike shield myself and bring something down to low and have them finish it off but I want to do it right, right out of the gate.