"Realtor Duct Tape"

Or, Real Estate's "Swiss Army Knife"

What's the Realtor equivalent of duct tape -- the (seeming) solution to every household repair problem?

My personal candidate is a razor blade (single-sided -- very important).

In just the last week, I've used one to: open a painted-shut window; remove gunk stuck onto (otherwise) gorgeous hardwood floors; remove adhesive labels from brand new French doors; and cut off a snagged loop of carpeting from an entry rug (I didn't have a scissors).

I've never had the need, but my guess is that a razor blade plus a little ingenuity would also get your keys out of your locked car.