Scrolled through the forums and noticed there's nothing on this topic. Ladies, if you haven't yet check out mooncups. They're a medical-grade silicon cup you wear instead of a tampon, and they catch the blood rather than absorb it.
Pro's
Less chance of getting toxic shock syndrome and dying
Better for the environment and your body
Won't run out. Will literally last you years
You can use tampons for prep as firelighters and all the other clever things I've seen suggested on here without worrying you'll need them later when you're bleeding out!
Some come sold in cool little bags
Most brands offer 2 sizes - pre-baby/ aged under 30, post-baby/ aged over 30
Brilliant barter item
Gentlemen - you can prep long term for infant daughters without a bulky store of tampons for over a decade. Have a stash of these, perfect gift when she turns ten!
Cons
May gross out men? I mean, if that's a con
Cost about £20 each. But that's only about 2-3 months worth of sanitary products anyway, and this lasts years so sound investment.