Congrats on third interview tsc
I know what you mean about lack of particular "achievment" mlic, also with SAHM jobs you just have to do it all over again the next day, there is always more washing etc. Sounds like you do loads though. I spend far too much time on the internet! But my job before the dc was workign in a nursery so I'm kind of doing the same now (but with added housework at home!)
I try and look at it as kind of multitasking/managing the house too, I do all sorts of things that need sorting out, yesterday I re-fixed the mortgage rate, I sort out all the bills, finding best deal for utilities etc, I sell stuff online (just stuff round the house we don't need anymore, even started selling the tiny baby clothes). And me and the kids get out somewhere once a day. I try to do all the free/cheap stuff too, it's easier obviously cos weather is good here at mo so it's beach/park. In wet weather my staple is a near-empty (during the week) softplay that costs 3 quid - A will happily play in there for about 4 hours!
I wouldn't mind some extra income, evening/weekend jobs are not common at all here though. I could leave A now, she'd be fine, not so keen to leave G yet but could do it. Plus cost of childcare would pretty much wipe out any wage I made anyway.