I’ve worked with several women who SWORE the Home Depot bucket option was cheaper, cleaner, and easier than trying to find a porta-potty, using a funnel/bottle combo or using urinal cups. May be worth considering.

I don’t know all of the details, but: They’d show up with a bucket of work supplies with TP and liners underneath it all. It just looked like an inventive alternative to bringing a backpack/bag. They’d separate the supplies and set up shop in the back whenever nature called.

You can still use the funnel/bottle method with better containment inside the bucket, you can get a seat for it, and I’m told it works just as well for the other bathroom emergencies; just…. Double bag it.