Oh, tell me about it. Technical 'apparel' (jackets, shorts, hats, gloves, jerseys) n+1 has now progressed to 'needing' different types of bib shorts/tights for different conditions on longer rides. Never thought I'd wear them, but they are just much more comfy than standard shorts/tights/leggings/trousers over distance...
n+1 also applies to luggage carrying options: racks (rear and front), panniers (rear and 'universal'), bar bags, saddle bags, trailers, etc., etc. etc.
One day I'll have to get someone versed in feng shui/zen minimalism to declutter my accumulated assortment of bike stuff. Maybe even have a go at the bike 'stable' too...