I'll grab a set and do some simple movements like a bicep curl into a press (? still not sure on terminology but the one where you straighten your arms above your head). I only do movements that I know will feel good and won't break me into a sweat. I always end up wanting to either do more or stretch, neither of which I would've done if I hadn't picked up the weights.
This is a successful workout: You're moving your body purposefully, paying attention to it, and being present. By lifting just a couple of times, I'm forced to listen to my body and what it needs today. Remember, you're supposed to have rest days! Good luck 🙂