Ok, I am somewhat new to scrapping, but I do know that items used should be labeled acid-free and lignin-free. However, what about some items that are not labeled as such like buttons, ribbon, notebook paper, post-its, or mod podge? I have seen some projects described using some of these items, yet I wasn't aware they would be safe (esp the mod podge and post-its). Also, are the sprays to make items acid-free really effective/worth it? I have lots of items that I don't want to leave out of my scrapbooks that probably are not photo safe (I spent a year in Europe and have lots of ticket stubs, brochures, post cards, etc). I don't really want to scan these and print them out onto other paper; I like the originals! Thanks