I used ETH to book my Uber from the airport after my card was denied once more.

When I arrived in a new nation, I had no local currency yet and had my card banned for the third time this trip, but I needed transportation.

While I waited for my bag, I used ETH on my phone to purchase an Uber gift card. Before I reached the exit, I applied it to the app, so by the time I arrived outside, a ride was reserved.

I've started holding a modest amount of ETH for just such circumstances. When a bank card fails at the wrong time, gift cards cover everything you need, including hotels, taxis and food delivery.