A pair of washable long latex gloves, a nice soft cotton washcloth, and a bit of chlorine bleach. Use potty, wipe down your rump, clean cloth with bleach... rinse with hot water, let dry.
I've done this before... works well, and surprisingly doesn't really smell except for when you are washing out the cloth.

And if you don't have the virus this isn't all that unsanitary. Periodically so a load of wash with hot water and clean "the rag" and follow with scorching hot drier cycle. Done.
It's like wiping my dogs butt after she got sick. No big deal. Re useable. Saves trees. Come on... everyone goes, why not just be
An animal and get weird.
Everyone had their own butt rag, as my dear departed granny used to say. She grew up in a rural area of Texas, and survived the 1917 flu pandemic and the great dust bowl and WW2 etc. I am starting to see the deep wisdom of her "weird ways". She always saved plastic bags, and she always found uses for them too. I'm glad to have grown up a little odd like her.
Learn to make bread... Use Causes' recipes here.
Like kobuk said, sew. Don't buy much new materialistic things. Repurpose things. Don't be afraid to buy what you need, but only but what you need.
And please don't be the doomsday guy/ gal. Makes America weak by hurting others.
That doomsday guy may die with 100 rolls of the best white gold. But I have my butt rag.