They easily attach to your project with attached wire.
Many sizes, colours & varieties in store for favours, scrapbooking, cardmaking, cake decorating, hat making, etc, etc.
Some ideas on how to use:
25 Thank You Thanks Charms Tags Silver Metal Favour B14558
Double Sided Foam Tape 200 x 10mm Squares 1mm Thick
SKU: 10mm tape
2 Silver Grade A Rhinestone Crystal Heart Buttons 23mm m0332