Such a great post.
This is a list of things you’re allowed to do that you thought you couldn’t, or didn’t even know you could.
I haven’t tried everything on this list, mainly due to cost. But you’d be surprised how cheap most of the things on this list are (especially the free ones).
Note that you can replace “hire” or “buy” with “barter for” or “find a DIY guide to” nearly everywhere below. E.g. you can clean the bathroom in exchange for your housemate doing a couple hours research for you.