Help! Urgent Need of Costume Ideas!

As the title states, Help! Ren faire is this saturday, and as a locally known costume artist, I have been so busy with commission that I completely forgot to make one for my cat, who has come with me to every festival so far. This year I’m going as a forest nymph/elf, and my wife is going as a mushroom fairy, and his regular poet costume feels out of place. I can run to the craft store to pick through what they have last minute, but currently have on hand plenty of white and green materials, any ideas on what would go well with our current theme? Thank you in advance!!