I'm kind of "lucky" as DS has decided the vacuum cleaner is one of the most fantastic things ever, so he follows it around as I vacuum the house, I just have to watch him to make sure he doesn't try to eat the cord. I tend to plonk him on the bathroom floor with his bath toys when I have a shower. If I'm cooking, I open up "his" drawer, which I've started to fill with things that make good noises (tin plates, wooden spoon, couple of plastic containers so far). I mop the floors when he is asleep, as it gives them a chance to dry. And everything else I tend to just squeeze in to my day when I can, so sometimes the dishes don't get done till late in the day, but I'm one of those people who don't think that that's a big crisis as long as DS has had a happy day. I do dinners when DP gets home, as he takes over the entertaining/bathing duties, which gives me a break to do the cooking (which I like doing, so it mostly feels like a break after a day of Mum-duty)

To entertain him (DS, not DP), I sing lots of songs, or if I'm sung out I sometimes just have the radio on, or a CD. I'm not a TV person, I feel guilty if I have it on because he's now at an age where he stares at it & stops moving, which I think can't be that great for him. We also read lots of books, mostly when we're having quiet time before a sleep. And I try to get out for a walk with him every day if I can, even if it's just to Safeway for some milk. I spend quite a bit of time just hanging out on the floor with him, but then there are also times when I just let him sit on the floor with his toys and entertain himself. I know he's had enough when he starts to climb my leg...

It can be hard adjusting to not having visitors around, we had the same when my MIL went back to the UK after 2 months with us, it took us a couple of weeks to re-establish a routine. Probably harder for you as it was your parents, not so hard for my because it was my MIL (even though she's a pretty good MIL as far as these things go).