Microsoft Surface Dial
Microsoft Surface Dial is basically just a knob with shake motor for feedback. It can control sound level, any slider setting, or as pie menu selector. Need custom app software.
![Microsoft surface dial xf579](imisc/Microsoft_surface_dial_xf579.jpg)
![Microsoft Surface Dial k9f8w](imisc/Microsoft_Surface_Dial_k9f8w.jpg)
Here is a video that explains it well
![Microsoft Surface Dial breakdown 888tx](imisc/Microsoft_Surface_Dial_breakdown_888tx.jpg)
Microsoft Surface Dial Buy at amazon
As far as tech and design goes, i don't think Apple's leading anymore.