Which case is compatible with iPod touch 6?

The gen 5 ipod and 6th gen iPod are exactly the same size. The only difference is that hte 5th gen models have a little lanyard loop that the 6th gen doesn't have (so a case may have a small round hold on the lower back).

iPhone 5 cases will fit the iPods, the volume up and down buttons are just a bit off and the iPod is a couple of milimeters thinner.

The only place you can probably find iPod cases might be toys r us, maybe target and amazon.

for mine i just use cheap iPhone cases and keep it in a small zipper bag ( I'm a protect the expensive electronics kind of person, not the kind to just toss it in my bag or pocket and hope for the best...bit silly that way.)

I'm not familiar with a magsafe, but for power inputs, whatever works for an iPhone will work for an iPod.