I've avoided using garter stitch because I absolutely hated picking up a dropped stitch. I eventually worked it out to do it more or less the way shown in the video salmonmac posted. When it happens again, I'll watch the video for a refresher.
Cheating is an option. . . . Cheaters never win and winners never cheat, but smart knitters who want to retain an iota of sanity do, cheerfully. ~~Kory Stamper