How about the following...
Alternating 1 armed dumbell snatch for high reps
Front Squat push press with light weight for high reps
Burpees plus press ups
Bears with light weight for high reps (do a search)
Alternating 10 press ups and 10 squat jumps for 10 sets in total
Or - just check out crossfit.com for more cool GPP ideas
PM me and I can send you spread sheet of other gpp workouts I have used.