Wipes
Roblp - I don't actually know what a Sani-Com is, but we use a form of medical wipes which are cheap and completely effective; they are generic alcohol based wipes bought from your local pharmacy.
Bucket and Spade - whilst some O2 masks can be tested without putting them on, some more primitive ones need you to essentially suck on them to properly preflight, at which point you're sucking on the same mask that countless previous pilots have also sucked on. Yeugh.