I love tablets.

There are already plenty of software solutions to this problem. On most Android devices, one is able to access media shared on a LAN for playback and copying. All of the popular file broswer applications have this functionality (my app of choice is ES File explorer https://play.google.com/store/apps/details?id=com.estrongs.android.pop&feature=search_result#?t=W251bGwsMSwxLDEsImNvbS5lc3Ryb25ncy5hbmRyb2lkLnBvcCJd) and there are purpose buillt programs that allow one to push data over WiFi to your device through a web interface (WiFi explorer pro is my choice here https://play.google.com/store/apps/details?id=com.dooblou.WiFiFileExplorerPRO&hl=en). Pretty sure that either of those are available through the Amazon appstore on your Kindle, which is a bit less open and user friendly than other tablets. There are other more complicated ways to do this with rooted devices.

Your suggestion at the end sounds like you just want a NAS box. This has already been done with an rPi, a tutorial to make one is at http://www.howtogeek.com/139433/how-to-turn-a-raspberry-pi-into-a-low-power-network-storage-device/ .

Thanks for replying, however I dont think that you fully understood my real intent.  As you say in your answer, the fire is one of the "less friendly" devices.  This sums up my problem because I already have the es explorer, and there is no problem pushing data to the tablet via wifi,  the problem os the device gets full, and there are not any good ways to get the stuff off the device tha do not involve computer hardware, Ie pliging the kindle in to the computer.  No external sd cards, and I am not even allowed to plug a flash drive into the usb port, without "rooting" which I do not wish to do because I believe it might interupt my abillity to access my amazon content.  I need the solution to let me get files OFF my kindle. no wires, computers, whatever. 

Thanks for replying, however I dont think that you fully understood my real intent.  As you say in your answer, the fire is one of the "less friendly" devices.  This sums up my problem because I already have the es explorer, and there is no problem pushing data to the tablet via wifi,  the problem os the device gets full, and there are not any good ways to get the stuff off the device tha do not involve computer hardware, Ie pliging the kindle in to the computer.  No external sd cards, and I am not even allowed to plug a flash drive into the usb port, without "rooting" which I do not wish to do because I believe it might interupt my abillity to access my amazon content.  I need the solution to let me get files OFF my kindle. no wires, computers, whatever.