One of the best offerings to make to, well, anyone is charity. Donating to charity in your deity’s names is wonderful. Not only is it a perfectly acceptable offering for a great very many beings but you’re also helping out as well.
Think outside of the box when it comes to your donations and charity! You can donate to a beekeeping association to honor a deity of agriculture. Volunteer at a women’s shelter for an offering to a goddess. Those beings associated with health and healing probably will enjoy an offering of volunteer work with the homeless or LBGTQIA groups. Helping out the elderly could work beautifully as an ancestral offering. Worship animals or nature? Donate to a shelter or organize that support them!
You can do other things too. Business owner? You can donate some of your proceeds or products to charity. I offer up healing salves and tarot card readings where the proceeds directly go to a local charity. Do you knit or sew for charity? You can enchant that too for safety and warmth. I also routinely help clean the beach and parks because those places tend to get forgotten in the winter time. And that, too, is an offering.
There’s lots of things you can do to help others and use that act as a sacred act for your own deities. People say this is the season of giving, so why not give an offering or magic?