Have a bootsale, but not a local one: then it won't turn back up with you! My mum brings me stuff; we don't talk so much, so I think it's her way of saying she loves me! But I have so many toiletries I don't know what to do with them all! In fairness, she gives me very useful things (edible or household-y usually!) so I don't mind really. When I moved out, I had to buy one of those plastic storage drawers with 3 compartments, just to fit all my toiletries in! Now it's 4 years later, I am 21, and I still get a boxful of stuff whenever mum and dad visit! And dad has to carry it all in!
I would like to have less stuff, but I have cut down a lot! It's less to dust too! I love candles, and "bits", that's my downfall!
Tell your mum that other peopl emight need the stuff she brings more, then get her to give it to other family members!