For a homemade Kaleidos game you could use the big alphabet die that comes with Scattergories (if you see one thrift shopping!) or you can buy one at the dice section of teacher supply stores. Teacher supply stores have blank spinners, too. The game reminds me of the classic picture book Animalia, whose author was in Austin recently. Everything in the detailed paintings on each page pertains to a letter. He held up the book and people instantly were shouting out things, many of them quite different from one another. Interesting how our minds work.