[rationalist]

> wads of travel cash

Be very careful about this. It is a good way to get your money "stolen" through Civil Asset Forfeiture:

https://en.wikipedia.org/wiki/Civil_forfeiture_in_the_United...

> A 2020 study found that the median cash forfeiture in 21 states which track such data was $1,300

It doesn't have to be a lot of cash, and in fact smaller amounts are more likely to be taken so that there is less of a fight to try to get it back.