Hmm, the delightful @MeganB covered you with spells, but if you cook a lot, maybe use some prosperity magic in your food?
There’s a book, Cunningham’s Encyclopedia of Wicca in the Kitchen, that may help you. I also found a couple of sites that may help you!
Kitchen Magic: Best Samhain Foods for Your Festivities and 6 Magical Tips For Attracting Abundance. Those may help you, plus our Witch Challenge this week is Hot Brews and Magickal Stews, so somebody might be doing some prosperity kitchen magic there.
Hope all this helps you out! Good luck!