May not be new, but it is neat and it works.
Was watching another old "What is it" segment of "Ask this old house"
A viewer had a neat idea for removing the plug from a hole saw which
IMHO, ranks high in the PITA category, especially if you have a bunch
of holes to drill.
A couple of deck screws spaced 180 degrees apart, screwed into the
plug until they touch the hole saw, then a few turns alternating
between screws until plug clears hole saw.
Not rocket science, but somebody had to think of it.