My Deviled Egg Trick:
4 T. mayo
1 tsp. mustard
1 tsp. white vinegar
1/2 tsp paprika
Pinch of salt
Put the egg yolk and rest of ingredients into a ziplock bag, seal and squish it with your hands.
When it's smooth, cut a corner of the bag off with scissors.
Squeeze the "yolk" into the egg white halves.
Toss the empty bag- and they're all done!