Look for something at the same time:
1. absolutely harmless
2. beautiful
3. redundant in every sense, which, in principle, can be dispensed with, but which will not be worse (paragraph 1)
3. overpriced
Cars exterior tuning, for example (engines tuning and ECU mods are not absolutely harmless). This can be very expensive.
Bikes exterior tuning, for example (yes, I've seen a gold plated frame). Use of expensive professional components in custom bikes for non-athletes, for example.
There are a lot of things in fishing gear, in tourist and sports equipment, etc etc etc.
And all this is very good.
Our civilization is based on a constant movement from limitation to excess. From lack of food because the hunt failed - to agricultural technologies, from lack of energy and from children dying of hypothermia in winter - to thermonuclear fusion.
So don't touch the snake oil, this forum is a pure snake oil also