This little slider can be used as a reminder or an indicator to show any type of binary output such as "yes" or "No". It is printed in three parts which all snap togerther without any glue. You can Just print the slider and it's housing or you can print a plaue with it built in which you can write a statement on. One example could be, "Have the dogs had breakfast?" The plaque can be attatched to the fridge in a home by a magnet and when anyone feeds them, the can just move the indicator to yes meaning that everyone else in the house knows. You just have to remember to move it back to "no" later :) You can decide which side is "yes" and "no" or you could write it next to them. Another option would be to colour coordinate them with green and red paint. In terms of writing on the plaque, you can use a whiteboard or chalk maker so that it can be rubbed off later. Probably the best option would be to use a sticker or post-it note to avoid staining the plastic. Anyway, a small binary indicator has plenty of uses so let me know what you use them for.
This one is quite niche but I hope you enjoy