"cleaning child baking marks"
I find boiling them makes less mess.

Liz, this would be the marks, or the children...?

Emma swears by lemons for de-limescaling the sink.

A music-related one. If you play guitar fingerstyle, use rubber gloves when you wash up, otherwise your fingernails will go all soft and brittle.

A vacuum and brush attachment is great for dusting skirting boards and tops of doors, or anywhere else which doesn't need to be pristine and is a pain to dust with a cloth. Also gets the worst dust off other surfaces before you damp-dust to get the last little bit (if you care enough to damp-dust; I'm not eating off those shelves so the vacuum's good enough for me).

Graham.