Instead of an autograph album have you thought about something like a bag, hat, or backpack to gather autographs? That way you have something you can use and enjoy, versus something that will be tucked away. I made a bag in red with white polka dot fabric that had spaces of white fabric for signatures.
Or, have the signatures on simple solid colored cardstock, and then incorporate those signatures on to you
scrapbook pages.
I have scrapbooked for years. For me, and this is very personal, album pages with lots of stickers, patterned paper.... distract from the photos. A lot of times the patterned papers actually seem to "fight" with the photos. Those Disney papers are soooo adorable, but in reality very hard to use with photos.
For the Disney albums I have done I skipped most of the Disney patterned paper and embellishments. Instead I went with the colors of the photos. If we were at a water park I used tuquoise papers... You can also get lots of mileage from solid black, red, yellow and white paper.
If you have never scrapped before the photos really "pop" when you mount them on a solid color scrap paper before you mount them on the actual scrap page.
You can often find entire spools of ribbon in red with white polka dots. I found a sheer ribbon with black and white dots. You don't have to buy actual ribbon either. You can buy a small bit of fabric and cut that into ribbon width. You can use the ribbon to make borders, tie on a tag....
You can print out pictures of Mickey, Minnie... from the internet. Don't forget when you are on vacaction to pick up and save every little placemat, napkin, daily listings..... You can use these as background papers, cut up the little details and use those instead of stickers. A paper menu from a restaurant you went to makes a great background paper.
Postcards are also great embellishments. I hope this helps you save money!!