Been in IT for 25 years. This is the greatest perk.

I worked for a hospitality company, fortune 500, who had acquired us and had never had an IT department before.

I still have boxes of Cat5e from the wifi installations, who said to pitch the cable into the trash.

I also harvested a switch with just one bad port (48 port cisco catalyst) and when they decided to upgrade the call center with new PCs and were throwing away the old pizza boxes, we were all stuff our cars. I built a cluster, just because, but then started reinstalling Winders XP on them and giving them to friends, family, or selling them dirt cheap to acquaintances.