Bragging rights don't go to me I'm afraid. I have a lot of gear but many on AOS will beat me hands down I expect.
Lets hear how extreme your collections are.
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Here's mine, or what I can find or remember I own.
Front end: Five turntables, four tonearms, at least twelve cartridges, three SUTs, one phono stage (I have two very good ones built into pre-amps). Three CD players, Two DACs, three jitters busting boxes, two valve buffers. One MD deck.
Amplification: Six pre-amps, four sets of power amps including monoblocks, three integrated amps.
Speakers: Four pairs, one sub, plus at least ten sets of bass or full range drivers, two pairs of midrange units, about ten pairs of tweeters and a couple of dozen various crossovers, etc.
Cables: Dozens of all sorts.
Other stuff: Boxes and boxes of components, books & brochures.
Tools & equipment for Hi-Fi use: Mountains!