I have three kiddos. They've all done the autograph books a few times on past trips, but now I'm looking for some budget-friendly AND easily transportable alternatives. We are just out of the stroller stage (which is awesome and a little sad at the same time), so it will just be my small-ish backpack as a park "carry-all" this trip. I need something that I can fit into my backpack (x3) for the kids to get autographed and I'm stumped! What have you used that worked out great, but didn't take up a ton of space? Something your kids still use or display? I like the pillowcase idea, but I'm not sure how to carry them and make them sturdy enough for the characters to sign without carrying a ton of weight/bulk. I'd love to hear suggestions and what worked well for you! Thanks in advance!