I use blue painters tape (low stick) and try to separate fuselage and wing parts. You can even separate wings into upper and lower and right/left if you wish.
That bring up the point of remembering to build a wing for each side of the plane , not 2 right sides.
By the time you start your second kit , this will all be natural.
As I gather accessories (wheels, mounts,hardware, etc) I put it into the kit box so it won't get lost in the shop with all the other stuff and I don't forget what I meant to use.