My Fujitsu ScanSnap iX500 is my best friend. The only way to go paperless is to be ruthless as it will accumulate over and over again. For all but certificates, diplomas, deeds, policies, wills, photos, slides, negatives, appliance warranty documents (for potential resale) and a recent proof of address (last council tax bill and utility statement) the route of paper is straight through the scanner to the shredder. (I would buy a scanner with an integrated shredder for convenience).
I find most T&Cs either as a website online (bookmark +screenshot) or as downloadable PDF. If not I scan them.
It feels liberating not to have box files at home. I empty a full shredder every week despite getting most statements online these days.
My scan archive is extensive. Used to be also in Evernote, but switched to Devonthink last year. Everything is searchable. Actually, surprising to see how searchable bank and credit card statements can be used for journal searching; When did we last eat in XYZ?
The next thing is to get rid off are physical Books (bar a few mementoes), CDs, DVDs and BluRays…All of them now live a happy digital life in the cloud and on iPad, Kindle, Roon and Plex, instantly available whenever and wherever I want them to.