Wow how fun were these to get right before the Holidays - I have used them on Thanksgiving cards - slide fall colored ribbon or paper throught the slides and stamp a message on the center of the slider . . . so fun. Plan to use them for my Christmas cards also.
I love using these little tags for the "who-what-where-when" info for a layout. They're big enough for a name, place or date, but not so big that they overwhelm the rest of the LO. They can be a little tricky to use with ribbon (depending on what you cut them from), but I'll often use paper strips instead of ribbon, so it coordinates with the rest of the design better.