Much sympathy MMG - my dd has been like this the last few days. I know it's because she's a bit unwell but grrr.
Bumbled's approach works for us but only with very immediate cause and effect, dd doesn't quite understand that going to the park is related to doing X at home, iyswim.
I do some simple stuff like if she's refusing to put her shoes on I say 'oh well, we can't go out' and go and sit in the lounge and put the tv on. She will poke her head round the door saying 'outside?' I say 'are you going to put your shoes on?' and she generally does. We're now at a point where I can just say 'are you not putting your shoes on?' in a grim tone and she knows what I mean and puts them on quick sharp.
With getting dressed I've gone for a positive approach, eg I manhandle her leg into one trouser leg and start ott praise 'Ooh, look at you one leg in trousers etc etc' also mega distraction, eg 'Look out of the window, can you see the pussy cat? I can look, look, over there!' etc etc and while she's occupied I quickly dress her and she doesn't seem to notice.
Nappy changes, I found if I give her a bit of control she's quite happy. She gets her own nappy, wipes etc out of the cupboard or changing bag, I give her the clean nappy and she fiddles with it, unfolds it etc while I clean her up then passes it to me. Where possible she chooses where the change is done, sometimes bathroom, sometimes living room (not when we have guests though!)
HTH - sorry to ramble!