Out With the Old...
Some sex toys really do belong to the relationship, as opposed to the individuals in the relationship, so once the relationship is over, the toys gotta go. Sounds like this particular ending is a relatively easy tragedy, based on your tone; good luck with the adventures to come.
You are right to ask about the proper disposal of your sex toys, though. Some sex toys include all sorts of weird plastics, and they should be either recycled or disposed of properly, not just unceremoniously dumped in a landfill. Plastics are so hard to break down, so they should be recycled or reused if at all possible.
Recycle Your Sex Toy looks like the major option of disposing sex toys responsibly. From what I can tell, it's done by Dreamscapes in Florida, which provides sex-positive products and education. Recycle Your Sex Toy has all the details on sending in your old toys and how you could get a credit toward the purchase of some new ones.
Best of luck in your new single life!

