I HAVE DONE THESE FOR YEARS W/MY GRANDBABIES! The munchkins can't make a mistake any color combination works and we have done our theme colors many years as well. I Just had to be mindful of age because of the glass. They even look great in a bowl or glass jar or vase or basket with some tinsel for decoration!
Christmas Picture Ornaments - have one who tree with photos on it and they are my favorites (have my family, loved ones who have died, old family pics from growing up). Just print out, laminate, punch a hole, place your fave holiday ribbon and hang on the tree! Such a conversation piece. maybe put wrapping paper or a little note on the back of each?