Copy and Paste frames to re-use in other scenes
Switch faces/heads on mini figures to animate expressions
If figures don't have moveable arms and legs you can move and rock back and forth to make better animation.
Use paper or foil for special effects. Crinkle it, reshape, shine light on it
Introduce Real motion into the frames by wiggling while taking photo
Use transparent studs to make figures appear to be in mid-air
Use mounting putty to hold figures in place.
Use real life items to create sets - rocks, grass, sticks
To animate a laser beam, Insert laser beam in gun, shine flash light, take picture, take picture while holding laser beam at edge of frame.
Print out facial expressions to swap out and make mouths move.