[OOC][Brainstorming] Intelligent Devices for non-"Lyrical Nanoha" mages

[Black Aeronaut]

Now... what would this Device look like? Auxiliary control-type Devices don't have (or need) multiple forms, since they aren't essentially concealed weapons. And we've seen that a Device can be fit into something as small as a glass marble (hello, Raising Heart!) and worn as a pendant - but Kuroko isn't one for jewelry.

"Bluetooth" earpiece, or headphones with microphone. It could even pair itself with her phone.
...

Indeed.  For Teana it was her gun... and for Subaru it was her boots.  A device can pretty much be whatever form-factor you like.