Old vacuum cleaner?

I want to cut a channel into a brick wall using an angle grinder.

The channel isn't deep / long, but there will be a lot of dust - which will pretty much destroy any vacuum cleaner I use to suck it up.

I've asked this here once before, but if anybody has an old, nearly dead, but still working vacuum cleaner they'd be happy to part with, please let me know.

My alternative is to buy a new $40+ vacuum cleaner from the warehouse and then throw it away after using it.

I'd rather not do that. It'd be a shame to put that amount of plastics and electronics in the tip after only one use. Better to use something already pretty much at the end of its life.