
Advice to gadget makers...
You'd seriously better considering implementing some tight safety standards on the lithium batteries in your gadgets, and on their integration into the gadget, to ensure that THIS NEVER HAPPENS AGAIN.
If we ever get to the point where entire classes of gadgets are banned from flights, then the repercussions are enormous.
This requires Industry wide standards, like NOW.
They can copy and paste them from the nearest MIL-STDs.
WAKE UP CALL.