I have a device to send the Blog but ...

[xrunner]

Well, I know he's got it 'cause I've seen the box in the stack on the last mailbag video. We'll have to be patient yill he gets to it. 

[TimNJ]

Wrap it up in pink paper with 'hello kitty' labels attached, should get his attention.

hahahahaha. I actually laughed

[smashedProton]

Cell phone jammer?

[kfitch42]

IANAH (I am not a Ham).

Antenna is about 5 inches long, assuming 1/4 wave that gives 590Mhz. Or 1/2 wave that gives 1.18GHz.

A quick look at FCC allocations suggests we get either "TV Broadcast" or "Aeronautical Radionavigation". Neither is too likely. Of course I could be a bit off on my 'measurements' ... 915MHz ISM isn't too far off, neither is 608-614 "Land Mobile/Radioastronomy".

Given all that ... its a pocket Arecibo!

[xrunner]

Valiant and very intelligent attempts to guess it - but all wrong.

I'd be tempted to pull it a little of it out of the case and take another pic - but it's in Australia at the moment. 

[G7PSK]

Metal detector/body scanner for security.

[Smokey]

It's a shovel, which should result in the shortest tear-down video ever.

[TheEPROM9]

put a beeper and a flashing light in the packaging ... not just will HE love it but shipping agents will love it too!!!

Don't forget a set of 7 segment displays and a back counter using logic gates, they will surely appreciate your skills.

Don't forget a loud ticing sound 

[smashedProton]

The woz did that to his locker in high school.  He was suspended for a week.     and then there was that time where ge spent the night in jail

[smashedProton]

That was a ...

[xrunner]

Metal detector/body scanner for security.

Correct. I didn't want to say until he opened the package, which he did in the latest mailbag video.

Congratulation for a correct guess.