Very little purchased by me--
My son ties all the flys, and builds all the rods so I don't have to worry about the new stuff.
I do attend a lot of auctions specifically looking for fishing equipment. My father collected equipment as his uncle did before him and I have inherited the entire collection, a lot of it dating back to the early 1900's, and continue to add to it when I find anything of interest. Not much of it is used for my fishing. It sits in cabinets and boxes. I have been fishing for 60 some odd years and I havent thrown anything away either so there is a bunch of it.
Biggest problem is sneaking anything I buy past my wife and getting it put away before she sees it. I always catch a lot of grief when she sees me bringing "new" old equipment in to add to the collection.