I love experimenting with materials and finding solutions for items I've collected at flea markets and thrift shops. I had a bunch of images cut out from vintage magazines and being an Etsy seller I had quite a bit of clear packing tape for mailing orders. With these two materials, I experimented with making some unique DIY stickers. They are easy to make and add a layer of richness that you can't get by cutting and pasting the magazine paper alone.
Clear Packing Tape
Clippings from retro magazines (small enough to fit within the tape!)
Sponge (with soft & scrubby sides)
Now you've got a great one of a kind sticker. Want a whole bunch? You can scan your retro images and print multiples on a laser printer. Inkjet will not work. I have only used magazines from the 60's and 70's. It would be worth the experiment to see if newer ink and printing processes from current magazines work as well.