Shaving gear, watches, coffee, wine, but the "weird" one.... flashlights.
flashaholics : flashlights :: chippers : chips
It's a surprisingly large and active community.
I've owned, built, or commissioned custom builds that can set paper on fire, illuminate targets nearly a quarter mile away, or flood a room with what looks like daylight while fitting in the palm of your hand. Builds were modeled in 3D CAD, custom parts turned from scratch on a lathe, and my workshop became reminiscent of a mad scientist's lab.
Anything you can buy off the shelf at Lowes gets a sigh and an eyeroll.
Many of the higher-end builds (not mine) could easily fund a very large, very mint, very colorful set of Paulsons. Much like chips, it is hard to understand the appeal until you've experienced one first hand - and much like chips, they can become very, very addicting. Candlepowerforums is the place to check out the madness. Stock Mag-Lites are the dice chips of the flashaholics, but unlike dice chips, they offer a great platform for customization.
Haven't been too active the last few years, but still EDC a small light along with my knife, and have piles of components stashed away.