How about a list of kits that can be built quick. I never get around to painting anything, you can factor painting into your list if you wish.
So say you start Friday evening, got a drink, a good movie and off you go. Hopefully it will be finished, paint or not, by Sunday evening.
What you got ?
I'll prime the list with:
Any Tamiya WWII tank Revell or Monogram aircraft All those 1/35 figure sets you have stashed