Rule Box Attachment for Killer Bunnies' Bunny Box

I bought Bunny Box online as a way to organize my killer bunnies before I had a 3D printer. The problem is that it didn't have space for rule books (an essential tool for Killer Bunnies) and when I asked about it, they were like "Oh well, we don't store rule books". So I went and designed boxes that slides in where the top lid normally goes, then have the lid go on top of those boxes.

I printed each box on its side where it would slide in for increased strength and to avoid having supports inside the sliding slots. I printed with a wood filament which stringed a lot but looks nice with the wooden box after cleaning up.

The Rule Box holds all the rulebooks (I have all boosters except for Almond and Radioactive Robots, and I don't have Kinder Bunnies). The second box is smaller and can be used to store any extras or remixed or whatever. My printer couldn't print one box that big which is why it was split up into two parts.