I checked in on Petal again today and am slowly having her fish, garden, and dig for crystals and fossils to make a little money. While fishing, she somehow pulled an entire DJ booth out of the ocean and with that cash I was able to build her a proper bathroom - still making sure I only use off-grid items.
I thought it would be fun to try the off-grid lot challenge, so I made this sim to try and live off the land. I spent so much time in CAS that I really only had time to set her up with some seeds to plant and played for 1 in-game day. Not pictured are the tent and bathroom bush I placed down for her so she could have a better chance at survival.