Watercolor cloth napkins -"I painted the fabric with dyes degrading colors to create the look. I left unstitched fabric because I like this seamless effect, but of course you can sew the edge to be cleaner!" Would be great with Dharma Fiber Reactive Dye.
Create your own dip dyed shoes. You don't have to particularly use yellow dip-dye. I've tried this myself, and I dip-dyed my shoes blue and green instead. It really works! Make sure you have white shoes only, or else it won't work.
Carry home your groceries in a dip-dyed canvas tote like these from Megan of Glamour and Grace. On the next sunny day, head to your backyard with a large bucket filled with dye, and design a colorful reusable bag worthy of your important errands.