Elsewhere, you might want a great mesh bag so the sand can flow right out. If you're going to be tossing items in and out frequently, an open-top tote will work well, whereas a beach backpack is ...
In Fairfield, people were filling sand bags and clearing debris from creeks and streams as an atmospheric river moves in.
Here's where you can go in Shasta County to pick up free sand to fill sandbags. Some locations have free bags. Most require you bring a shovel.