Below is the type of 10-gallon sandblaster tank unit that I have and use now and then. It's a cheap quality "Made in China" apparatus that's available online with shipping for around a hundred-bucks. These are also sold in stores for short money too. Got mine used at a local flea market for about $25. The blasting media is poured down into the pipe tube on top using a funnel. It doesn't take much air pressure to run this size blaster.
When used, I blast the items out along side the house or sometimes in the front driveway when the wife's not around. Though no harm is caused, women seem to enjoy complaining about odd sounding equipment being used by a man wearing weird hood and heavy gloves.