Have you ever tried a mayonnaise and egg yolk hair moisture mask?
Egg whites for a cheap facial?
Honey, ground almonds, and a little olive oil for a body scrub?
Kosher salt and essential oils for a different kind of body scrub?
Do not scoff at vinegar. It cleans really well. There's a reason why coffee makers tell an owner to periodically clean the system with a solution of vinegar and water - it removes lime deposits and residue from the system. It can also brighten hair color.
I can see my tutorials on these subjects will come in handy.