What did you do with the ashes?

UPDATE- BIG thank you to everyone who commented. I truly appreciate you all sharing your personal stories and ideas. It was really touching to hear all the ways people keep the memory alive. 💜🧡💛🩵💙

We recently had to euthanize our two senior girls only three days apart. 😢 Now I have their ashes in the little wooden boxes the vet gave us. I was just wondering what people do with their kitty's ashes. Put them on a shelf? Scatter them?