Most snap kits have well detailed bodies and interiors, but no engine or opening hood, thus you can concentrate on a great paint job. They can be a great "quick build" that gets the creative juices flowing to get those stalled, full on glue kits started back up.
They also are relatively cheap, most retail around $15 and if you have a Hobby Lobby or Michaels nearby, then with their coupon you can get them for close to $10-12!