In my 20s I read something about a guy using a vacuum cleaner to suck himself off, but I believe it mentioned a shop-vac, not a standard household vacuum cleaner. Even knowing nothing about how my penis size compared to average back then there was simply no way a household vac made any sense! Like the toilet paper tube test, my flaccid penis wouldn't fit into a household vac!
Out of curiosity, I did try using a shop-vac with the standard 2.5 inch hose. My erect girth is 6 inches, and I'm 2 inches in width (my shaft is wider than it is tall) so I just fit. I turned it on and slowly inserted myself. It really didn't do anything for me when flaccid so I jerked myself hard and tried again. Not really any sensual sensation but the air rush did maintain my erection. It was a one-time thing never to be done or even thought about ever again.