is there a guide to create new tools?

Yes, Valve wrote one for Destinations:
https://developer.valvesoftware.com/wiki/Destinations/Destinations_Flashlight_Tool_Tutorial

Here is some more information on how the tool scripts are set up. I'd suggest looking at the scripts for the official tools as well.
https://developer.valvesoftware.com/wiki/Destinations/Destinations_Custom_Tool_Creation

I probably should add that there is no way (at least yet) to get the tools on the spawn menu or the workshop, so you're limited to using them in your own destinations.

shiny. Thanks! Too bad about the "only own destinations" limitation, but by the time I have the
tool I envision working I guess that will have been fixed ;)

Hey Lawrence, im not sure if this is the right place to go for help but im hoping you might be able to help me out, this is regarding SteamVR props, i put up a topic post here on SteamHome regarding qualified game props not appearing on Steam Storage and Steamhome. I have tried the following (playing both paid and free games that should give you a prop for 2 or more hours - finished a game story mode, im guessing just completing the game - waiting idle for 2 hours in a game just letting the timer go on) nothing of this have given me any props, zero. And i own about 31 VR games including programs etc.

Could this be a technical issue? is my Vive folders in the wrong path/driver?

2 others have also reported the same problem here on SteamVR discussions so far

Best regards
/Särnie