I've had the following components for some time. I'm not sure where I got them. Any ideas on what they are?

Scale is in centimeters.

First image: 66uH +/-20% inductor? (if blue bands are color code.)
About 2Ω in either direction.

Second image: Has only the single white dot.
< 1Ω in either direction.

Third image: Inductor? Color code gives 680mH (seems high) or 48uH.
About 1Ω in each direction.

Thank you.

 

the 2nd and 3rd picture are definitely inductors. The second one has probably only 1 turn.

 

The second one is also a single loop inductor, the top will have a blob of resin to stop it falling out. Usualy used in RF circuits.

 

Great, thanks for the help!