What is your "inexpensive" hobby that turned out to be expensive/ you gradually invested lots of money into?

https://sopuli.xyz/post/2837546

What is your "inexpensive" hobby that turned out to be expensive/ you gradually invested lots of money into? - Sopuli

Self-hosting apps / homelab

Getting used enterprise gear is not prohibitively expensive, but the electric bills balloon very quickly.

Yep. Half height rack, a couple servers, UPS, switch, etc.

And I still keep looking at used gear. Being in Silicon Valley there is always a deal to be had.