Cheap & affordable headset for under $100 for curiosity sake?

Any decent VR headsets for under $75 or $100? I’m kinda new to this whole area and my search is limited to Google and Amazon mostly and not really sure what to look for in terms of specs and such.

To get an idea of what I plan to use it for:

• YouTube videos for fun
• Maybe a VR concert if one peaks my interests
• Occasional games for game nights with friends maybe
• Stargazing and travel apps

As you can see, I don’t plan to be a real serious VR user, so I don’t see the need to shell out several hundred dollars for a fancy headset. But I do want something with a bit more heft than the Google Cardboard. Just something enough to use occasionally and to tackle my curiosity with this virtual realityscape.