My youngest is a toddler now, but when they were babies, while they napped I used to do housework and eat lunch. Now the toddler still has a day sleep (touching wood) and his big sister and I eat together or take the opportunity to play a card game we can't really play while he's awake (he wants to join in and will rip the cards).
When my kids are napping (or maybe that should be...If my kids nap!) I take the chance to have lunch without anyone throwing food at me or I race out to my computer and do some writing. Every now and then I will have a short nap as well, but I try to use the time to do things child free!
I use to go do some house painting, or clean up.
Back then you had to prove you were a good housewife, and as awful as it sounds....it was part of life.
I just kept going...and going...only to find out my husband didn't really think much of it!
I was totally crushed.
I miss naptime! I used to have a shower and get ready to go out during his morning nap and I always slept with him during his afternoon nap. When he was a tiny baby and napped more often than that I just napped with him. Always. No way was housework or anything else more important than getting some sleep!