I may have said elsewhere but I long had most of my books in the attic.  A few years back I decided if I was going to enjoy them there was no point in them being inaccessible and decided to commit to giving them shelf space where I could reach them easily in the study. 

It's from then that I reckon I date my renaissance in writing and creating Traveller material. 

With the books to hand, I could randomly pick one up for inspiration, I could check a detail in another and I could more systematically look through large swathes of them (by era or subject or whatever).  Better yet, particularly with adventures and the like, I could just enjoy them for their contents.

I'm not sure, if I could work out a way of being randomly presented with *any* page from Traveller that I could take some kind of inspiration from it - for a character, an adventure, a world, a scene or even a rule - but I reckon it would be a rare page that didn't trigger something!

BTW, I'm intrigued you keep yours on your iPad.  I love having much of that and more on an SD card on my (android) tablet.  But one of the reasons I would find it hard to go back to iPads is because there was no way of way moving all those PDFs *and* their folder/sub-folder structure over into memory.  Has that changed?

tc