Are there any collectibles in Canada?

I’m expecting the answer to be “no” but I would really kick myself if I missed out.

Basically, I have a little travel journal that I will fill up with sketches, scraps of paper, and a couple of Polaroid photos. The people at the border were kind enough to stamp the first page for me! I was wondering if Canada might have stamps, stickers, or anything that I could scrap book for this travel journal?