By popular request, here's a Koi Pond tuck box available for free download. It's sized to accommodate the complete basic Koi Pond deck, plus wiggle room for your card sleeves. Below are two PDFs. The first has the art and guides on one page. If you're feeling fancy, the second link has the art on one page on its own with the guides reversed on the second page, so you can print this PDF double-sided and have a nice clean finished product.