Here's how you can make your own
Step 1 - Get your box/s ready. I used a long tissue box and had to cut it in half. I have been saving square boxes to make more that will have a fancy insert where the tissues normally come out. You can use whatever you have lying around, just make sure you think about where you need hard surfaces and openings ahead of time.
Step 2 - Print images that are an appropriate size and match your personal criteria. For mine, I wanted to have similar looking styles of clip-art for my boy and girl. Make sure you know about what size will fit onto your tissue box.