Book Bag of Holding
TL: 19
Mass: 1kg
Price: Cr5,001
"Any sufficiently advanced technology is indistinguishable from magic."
- Arthur C. Clarke's Third Law

"Give me a pocket universe generator and a proto-dimensional power source, I can build you anything you want."
-Yori Snarfman, head dwarf artisan, Transs-World Excursion Research Project

The book bag of holding appears, to all intents and purposes, to be a simple nylon back pack of the type within which school children carry their books.  The interior, however, is a small pocket universe (1.4m³ volume) powered by a proto-dimensional power plant.  Because the backpack can unzip and fold out to an area of approximately half a square meter, fairly large items (including beings) can be placed within.  To allay the curiosity of creatures even as unintelligent as your typical airport screener, the book bag of holding comes with a normal-sized insert of about 6 liters volume.  This is attached within the zippered opening and can be filled with toiletries, books, electronic games, and other items normally carried by your average traveller (such items sold separately).  Items placed within the pocket universe add no mass to the book bag of holding, though those placed within the insert do.

Note: This device makes use of a couple of items adapted from GURPS vehicles and its supplements:

The Pocket Universe Generator

The Proto-Dimensional Power Plant

Component Vol Mass MW SA Price
PUG 0.000014 0.000023 0.00005 0 0.005
PD Power Source 0.00025 0.00025 -0.00005 0 0.000001