I know people have concerns with altcoin longevity/soundness/security but in a situation where every cent matters maybe an additional crypto to accept would be NANO? Though it seems to be less bartered locally. I read this a few days ago https://www.reddit.com/r/nanocurrency/comments/8wfl2r/venezu...

edit: Oh never mind, moments after I posted this i realized that with altcoins you could end up even less crypto worth vs BTC than you'd save on tx cost. :)