Did this a few months ago...
Wife didn't like the ergo's of the mountain bikes we bought a while back. Said she'd prefer the "Beach Cruiser" style better. So I picked up an '81 Schwinn DelMar off CL and cleaned it up. Complete disassemble/regrease, new bar, grips, pedals, chain, lighting, some polishing and some paint (I wanted it to look more '60's and less '80's).
Last weekend, neighbor was tossing out two Cruisers for trash. Both in real good shape, just needing some TLC.
So now I have a Beach Cruiser as well. Just waiting on a few new bits to clean it up nicely.
I'll post that one up when I'm done.
BTW, I have two Mountain Bikes (one male, one female), and a female Beach Cruiser for sale if anyone is interested.
Looking to get rid of them ASAP as the pedal bikes currently outnumber the motorcycles