I only found out about people doing this recently. But here is what I know people have done:

Add a USB port, or a flash drive internally to a tablet, using a spare USB connections on the mainboard (I've heard of people doing this with the venue 8 for example).
I saw someone also used this method to add bluetooth to a device. 

Add cooling mods, heatsinks, copper plates

Change the mSata SSD on a tablet with SSD.

So I got to thinking, has anyone here done this sort of thing? Seems pretty cool. I mean you could take a little 8 inch, and add 256 or 512GB of storage, or a full USB port (for use as a hybrid desktop). For windows tablet PCs especially storage is a rather big deal. And would be nice to have something more substantial and laptop like. You could write a start-up script to make it recognise as a permenent drive. 

Obviously if you have one of those oversized hybrids like a surface there is no real need. But I am talking the size of tablet you can hold sustainably in one hand, and are as likely to actually use as a tablet, rather than mostly as a laptop - those sizes of tablet do not tend to have decent internal storage, and the smallest with SSD atm, so far as I am aware is 9.7. 

And a lot of tablets have cooling issues, its the constant battle - especially when gaming. Liquid cooling on a tablet? hahaha!

Keen to learn more about this, as I want more of 3 in 1 hybrid in eight to 8.9 inches - and I think, pretty soon we will see the sort of core-m or cherry trail 4gb tablets in this size that would be as capable as I want it. But I doubt they'll have the heatsinking for games, or the storage I want. 

I guess I could wait three years, and pay a thousand dollars for a surface mini, but no thanks. And I could settle for some of the rather dope 10.1s - that's an option that I would consider, because they are semi-one handable, if weirdly long for the task. 

Still, I geek on this idea, tablet mods.  Anyone tried? Anyone heard of any other interesting tablet mods?