Another good way to extend the life of weights that are too light: Increase Reps, Increase Sets, Decrease Rest, focus on pace while lifting (4 seconds down, 2 s

Another good way to extend the life of weights that are too light: Increase Reps, Increase Sets, Decrease Rest, focus on pace while lifting (4 seconds down, 2 seconds up), and unilateral exercises (1-leg-squats). Not a substitute for everything, but hopefully can help bridge the gap for a little longer.