DIY Spy Sunglasses
I don't want to sound negative, but I don't want to insult your intelligence either. Therefore, I'll go ahead and say that you could probably figure these simple steps out on your own, but that's just a testament to what an easy build it is. Plus, the video is short and fun to watch. I found the recommendation to use "Solar Shield" sunglasses handy as a base for housing a camera or an HMD that won't make people wonder where you left your plaids and your cane.