I mostly use photo storage boxes (because they're acid free) and I have my embellishments and stickers sorted this way.... winter/Christmas, Spring/Easter, school/sports, vacation/travel, Fall/Halloween, heritage, birthday. I actually have so much Disney that I have a very large drawer and a small drawer dedicated to it (papers and large stickers in the large drawer, smaller embellishments in the small drawer). I am able to fit almost everything, including 12 inch borders in the photo storage boxes. And I was able to buy boxes with outside decorations that mostly fit whatever is inside (snowflake box for the winter, etc.)
I know that some people sort by brand or type of embellishment (all stickers together, all brads together, etc), but when I am scrapping something I don't care what brand an item is.... I just need to look and see what I have that fits whatever I am scrapping... sometimes I go looking for a brad and I find a sticker or border that would fit the page perfectly. HTH............P