Does anyone know what can be used as a "Document Indicating Current Location" in the DTV request if I don’t have a long-term residence in the country I’m applying from?

I’m applying from Canada. I’m a Canadian citizen and physically here right now, but I’m only traveling here temporarily. I don’t have anything with a permanent Canadian address (like a driver’s license, rental contract, utility bill, etc.).

Has anyone been in a similar situation? For example, would things like a boarding pass, entry stamp, hotel booking, or something similar work? I’d really appreciate hearing what documents have worked for others.

What have people used for "Document indicating current location"? If you're going to a neighboring country to put the application through?

In Vientiane, Laos, they require a "Document Indicating current Location." Do you know if my hotel reservation will work for this? At the moment of application, my current Location is Laos.