Toothbrush Disposal and Upcycling
First you need to use pliers to pull out the bristles. You can save the bristles and check with your local recycling facility if they are able to process the small bristles. If they cannot process the bristles then they will need to go in the trash.
There are many things you can do with the bamboo handle once the bristles are removed.
Stirring stick for drinks-
Mixing paints or glues-
Scrubbing hard to reach places (do not remove bristles)-
Many other arts and craft ideas-
As a last resort you can throw them in the trash. Since the handle is bamboo it will decompose in the landfill.