If you have plastic to recycle, some links: (Note – Sometimes links cease being available … keep researching!)
https://recyclenation.com/2015/06/how-to-recycle-toothbrush/
https://www.terracycle.com/en-US/brigades/colgate
https://www.preserve.eco/pages/gimme5-what-we-accept
https://www.treehugger.com/green-home/6-toothbrushes-keep-your-teeth-clean-and-green.html
https://thegoodwellcompany.com/
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For toothbrushes, consider Bamboo (which is often less expensive than the plastic!), or Preserve brand (check Amazon. These are recycled toothbrushes).
This is our World, and how we treat it matters.
~There are a thousand ways to kneel and kiss the Earth … Rumi