I am planning on getting a 3D printer soon and I was just wondering, what do you do with 3D prints that either failed or were prototypes that you no longer want?
I tried looking online but the closest I got was effects on environment, turning prints back into filament, or restarting a failed print half-way, none of which were the information I was looking for.

The solution should be somewhat eco and just keeping unwanted prints in a box somewhere isn't a very good solution either.
Finishing off failed prints isn't totally applicable because it wouldn't apply to prototype prints that you don't want to keep.

Is there anywhere to send failed 3D prints for professional recycling, or are there any recommendations for properly disposing 3D prints?

In case this is of any use, the printer I am planning to get uses filament that can be made of PLA, ABS, Nylon, and possibly other materials. The printer is this one specifically (https://www.kickstarter.com/projects/101hero/101hero-the-world-first-us49-3d-printer) from KickStarter.