There's very little chance I'll be able to get my hands on any official DJI addons and adapters in the near future, so I went exploring for alternatives because I had already purchased a Rode VideoMicro for my Osmo. After wasting my money on a bunch of options, it turns out I had a solution all along: the Mobius Helmet Mount. I have been using it for its purpose, strapped to my head with an actual Mobius to record my flights... this unstabilized video should show you how secure it is.
The mounting pad fits decently well with a little overlap which you can fix with a sharp knife if it bothers you. With just the plate, the Osmo plus phone mount still fits nicely in the case.

Note: the eletoponline365 eBay account is the original source for everything Mobius related. You can get these parts elsewhere (such as here for a higher price but with extra pads, I think - I bought mine a looooong time ago and have forgotten what was in the package) so shop around if you must.

Thanks for sharing, it's simple but also useful. What is that aircraft by the way? It's cool.

It's a Blade 200QX. It performs very well, and I use it to practice LOS - it's relatively cheap so I'm not scared to take risks with it.

LMahesa Posted at 2016-1-8 10:17
It's a Blade 200QX. It performs very well, and I use it to practice LOS - it's relatively cheap so I ...

It's very small and no gimbal camera on it, so you don't have to worry about the crash.

Exactly, Amy. I do sometimes strap a Mobius on it, but the results are rarely worth saving.  It's all about the fun.