You can keep a rodent(anything older than weaned, of course), in a tank with a secure lid or a sterilte type plastic tote(you'll need to make a wire "window" for the lid so plenty of air transfer) and give it some food and a dish of water.

A water bottle setup is nice, but you can just put a dish of water in with some bedding. The rodent may fill the bowl with bedding, so plan on checking a couple times a day so it always has water to drink. You can feed a rodent most anything if it's just for a few days. Cat or dog food will get it by for a couple days if you don't want to bother with buying rat/mouse feed.

Aspen bedding is better than pine, but pine will do in a pinch. I use 'kiln dried' pine for all my rats, without issue. Don't use cedar! If you have aspen for your snakes, that will work nicely.

Most of the time, all you need is a secure container, water and food. Nothing fancy.

I have a plastic tote that I cut a window in the lid, ziptied some wire mesh to cover the window, and I have used it for years now. Technically they COULD chew through plastic, but because the inside is smooth without ridges for them to gnaw on, they haven't ever done much. A rodent with food and water is usually content to just hang out. Give them a cardboard box(like a poptart box or something) to hide in and you're set up for luxury.