This is definitely my favorite tip that I use ALL THE TIME.
I'm a huge fan of those cheap but adorable wall sticker designs from Dollar Tree. I'm always on the lookout for the newest one because you can do several different layouts with one sheet.
I'm also a huge fan of using all the leftover sticker background to make my own stickers. If you've seen my quote journal pages, this is what I use for the words. I stamp out different words on the scraps for my own word stickers.
I also do this with the leftover clear sticker paper for when I print my printables. Clear sticker paper is more versatile because you can use the tiniest weird shaped pieces and you won't see the edges as much as you would white.
Sticker paper isn't cheap and there's no need to waste it when you can make your own stickers from the stamps you already own! Or make your own doodles.