I have a couple of components in the Arduino Starter Kit that I'm not able to find the specs for, this is a picture of them (ruler in cm for scale):
It's probably not possible to read the labels on them, so I'll write them down: The blue ones say
Where the ? represents a celltower-like symbol.
And the orange ones say
The manual mentions that they are capacitors but doesn't say anything about them. The online starter kit page only mentions one capacitor type and that one wasn't even included.