If your Habitat For Humanity Restore is anything like mine, they never have what you need. EVER. And if you happen to actually find something to buy there, when you get it home, it will ALWAYS be the wrong size, wattage, etc. and they WILL NOT let you return it. HA HA, NICE TRY LADY. But I’m not bitter. (Yes I am. I hate my Restore).
Anyway, I hope your Restore rocks. But if it doesn’t and you find yourself with some randomly sized cabinets like Micah did and no chance of returning them, well, whip out your saw and nail gun and caulk and a bunch of other stuff, and you MAKE them work for you! She and her husband made a desk! Yes, those are the same cabinets! See the whole process on her blog Captain Micah.