Cardigan Knitting Hacks

I am enjoying the Berroco Cardi House Party knit along on Facebook. Which brings the question to mind:
What are your favorite sweater/jumper knitting hacks?

Here are two of mine:

When casting on, leave a tail 2-1/2 times the length of the piece's seam on that side. Then you'll already have yarn attached and ready for the seam and it's one less end to weave in. Just pin it out of the way so you won't accidentally knit with it. Look at schematic to determine what that seam length is for the size. Works for back, left front, and sleeves. (Don't bother for the right front of a cardi, that's cast on at the cardi opening not the seam edge.)

When possible, work the edge stitch in garter. It helps tame the curl, makes a sturdy edge, and leaves a visual reference for where to seam. Not good for long cardis, garter stitch has a shorter row gauge than stockinette and will shorten the edge length.