Be sure to check out the new Ryobi 48V subreddit
The community gets pretty creative. I've tried to compile all the projects I've come across in one place. If you know of any others, please contact me.
If you don't have access to a 3D printer or want to print something your printer can't handle, you may be able to get the part printed at your local library or maker shop. Otherwise, you can use a service like Craftcloud to order 3D printed parts. They have partners in different locations that will print your parts and ship them to you. You can compare the costs and go with one that will deliver cheaper or faster. Use code REFWGG9AO2R for 10% off.