So this is (to my knowledge) the smalles full Windows 8.1 Netbook available. It has a standard USB-port(via Adapter), a small mouse, a microsd-card-reader all packed together in one small case.
Dimensions (closed) 14cm*20,5cm*3cm).
All together it costs around 135€

The holder for the tablet and the acessories are printed in abs(tabletholder) and in flexiblePLA.
Just a combination of a few things:
1. HP Stream7 (7 inch Win 8.1 tablet) (99€)
2. Bluetooth keyboard with case (20€)
3. Cable micro mouse (6€)
4. USB-otg Adapter (smallest one i could find) 4€
5. Microsd-cardreader 4€
You can buy these things here;
1. HP Stream7 (7 inch Win 8.1 tablet) available via HP-shop
2. Bluetooth keyboard with case http://www.amazon.de/gp/product/B00RL70G40?psc=1&redirect=true&ref_=oh_aui_detailpage_o08_s00
3. Cable micro mouse http://www.pearl.de/a-PX8559-1110.shtml?query=maus+mini
4. USB-otg Adapter (smallest one i could find): http://www.amazon.de/gp/product/B00R87KAQW?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00
5. Microsd-cardreader http://www.amazon.de/Kingston-Gen-2-MicroSD-Kartenleser/dp/B0028R3NCU/ref=sr_1_1?s=computers&ie=UTF8&qid=1435166070&sr=1-1&keywords=microsd+card+reader

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