Other customers want to fix it on indoor doors or partitions (or walls) and in this case I recommend using a double-sided self-adhesive tape. Here is an example. The number 8 is glued to our front door with double-sided adhesive tape.
* If you want to have double-sided self-adhesive tape on the back of your tiles, please let me know and I will do it (for a small extra fee)
If these should be fixed to an outside door then the best is to use some ready mix glue paste for tiles (like nail free glue they use for pictures)
All these images are from our own house, and how we use these signs
Here is a special present I made for the “in baskets system” of my husband!