Store-bought scraps come in all forms. Maps and printed papers can be used as backgrounds or to create pockets. Old-looking scraps (the seed label shown here) are available from scrapbook stores. Flea markets can yield old postcards if your own keepsake box doesn't.
Available at scrapbook stores, vintage papers can be used as backgrounds for smaller scraps and to make pockets.
Grommets can be used to secure tags, pockets, and other sturdy scraps to pages permanently. Brads come in traditional brass, in bright colors, and even in whimsical shapes. They can be used the same way as grommets but are removable. Jump rings are little metal loops that can be used to suspend items from brads.