You can buy pre-drilled wood slice ornaments to paint or use for photo transfers. See link below for details on the best ones to buy.
For painted ornaments, apply 1-2 coats of acrylic paint and let the paint dry 1-2 hours. You can also use a napkin for decoupage if you prefer.
Using a Cricut machine, you can add a Christmas decal to your painted wood slice ornaments. Use transfer tape to apply the decal to the ornament.
Another option is applying a printed photo to your wood slices to create a keepsake ornament. This is the perfect DIY gift or stocking stuffer for family.
Mix and match ribbons after adding jute twine or baker's twine to your ornaments for a finishing touch.