It wasn't much, but it made a big difference in this kitchen cupboard: I added an adjustable wire shelf above the plates to store all the brightly-colored toddler dishes. To fit it in, I had to first move the second shelf up a notch. That was the most difficult part of the project. It really was a challenge to pop all six locking shelf brackets out of their holes, all at the same time, without one or more relocking themselves. But I conquered it.
Silly me, I forgot to take a before shot so you could compare. Instead, you'll just have to imagine the jumbled mess it was before the wire shelf install. Note: the adjustable wire shelf is from Wally World.