For all of you who were wondering where I was the last few days.
I can now present to you the MORE then $50 node because I made it that way but you could probably do it for less if you look.
Soooo I picked up a bunch of surplus rugged dell laptops at auction. 8 for about $140 total
Dell Latitude 14 Rugged 5404 Intel i7-4650U 1.70GHz 4GB
Some worked fine others had issues.
Main thing was that all of them had the drives and the the drive bay removed. Damn, the bays are expensive ($40) I could have waited and gotten one for a lot less but I have the patience of a sugared up 5 year old so I paid it.
Took 4 gigs of RAM out of one and put it in another to bump it to 8GB (30+ screws that are not all the same to get to the RAM)
And an old 1TB laptop drive and now you have:

A fully portable and really heavy mobile node they even have AT&T 4G with stupid expensive and slow data. But yes it works.
This post brought to you by the department of just because you can does not mean you should.
Getting some things to work, like the 4g were a pain in the ass. But it was fun.
-Dave