I also happen to like the widget for Google Play Books, but have more than a few books in Amazon's Kindle app; fortunately Lucian Schulte has created the Kindle books widget, which resembles the Google book widget in both form and function. If someone creates a similar widget for FB Reader then I could happily browse all my e-books by widgets alone.
As a technical consultant, I go few places without my network toolkit, which includes ConnectBot (secure shell client), WiFi Analyzer, and Fing. I also run SSH Droid, but this is mainly a convenient way to load files onto my Nexus 7. Onec upon a time I also used Terminal Helper to store handy (or lengthy) terminal commands, but this is merely a subset of the function of a good clipboard manager, thus I've switched to Clipper by Rojekti.
Naturally, anyone without a password vault is simply asking for trouble. In my own experienced opinion, there is none better than Lastpass, particularly once one enables critical features. Fans of multi-factor authentication will want to install Google Authenticator and a barcode scanner.