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I've got a HermitShell for like 45 bucks. It's not as nice or pretty as those fancy charging docks, but it's safe and super portable for going to a friend's house to VRty.
I recommend that shit, especially if you have a lot of light coming in your windows.
Hardshell travel cases. Some are even made specifically for the Vive with foam cutouts and all that. I just found 2 on Amazon & I'm sure there are more out there.
There's those 2 for a start. I think those cases are small enough for carry on, which is a plus.