Our oldest gave the wife and me a "cardboard owl" for Christmas. It's like the $4 ones online but made out of the plastic corrugated "cardboard". It's really interesting but I wouldn't spend too much on it just yet.
It makes us a bit queezy so can't look at it too long.
Also, really uses band width and battery. I haven't looked at a lot of different videos, but they are mostly large downloads. If your on a wireless link or have unlimited data it shouldn't be an issue.
It also uses a lot of processor power so after maybe 10 minutes my S5 gets really warm.