Actually ordinary household vacuums are notoriously bad at sucking ashes from human remains. There are special vacuums for fireplaces and such that do way better job, Id recommend one of these
Why on earth would you want an MRI machine at home? They are huge, the noise they make is untollerable, you cant have any metal objects nearby lest they turn into projectiles and you need to be an MD to use it.
You are probably not horny every time you fap.
That means you fap/watch porn to feel better or distract yourself from something.
Figure out why you fap/consume porn when you are not horny. Deal with that problem.
Go cold turkey with porn/fapping.
There will be ups and downs but after about 3 weeks you will be ok. If you can last 2-3 months you will feel 100 times better (like gettig a hard on whne you see a (not even a very hot) girl on a street).
After that you can go back to normal but only fap when you are horny. Dont look at porn, it will mess you up.
Everything is possible if you lie.