Hello chums    I have a tiny tent, so every inch of headroom counts, but inline filters cost a fair whack and I'm a skin flint. So I nicked this idea of @latigid aikon for a DIY version. Costs about a tenner for everything needed, but if you're like me you'll probably have most of it already.     First grab a suitable sized airtight ish container to house the CF and make sure its light proof. I only have a diddy filter so this 10L bucket was plenty big enough.