[Sefka]

I haven't really got any advice, but I can sympathise - my (boy) hamster, Harvey, is super messy. He went through a phase of throwing everything off his shelf. Then another phase of overturning his food bowl (I think he thought there was something better buried underneath it.) His current thing is he's figured out how to pull the roof off his nest box. He blocks both doors and goes in and out through the roof.
And he hates having his cage cleaned. It's not so bad now, but the first few months I had him, he really used to freak out whenever I cleaned his cage. He's a bit better now, but I still tend to spot-clean and when I do do a 'big' clean, he's still not happy.
He doesn't always take food from my hand, but if it's one of his favourite treats, he'll usually take it.