A handy utility to have on your flash drive is a screen capture program. This can be especially useful if you are troubleshooting an issue and want to get a snapshot of the data or error messages you are working with. A program which offers this functionality is FastStone Screen Capture.

FastStone Capture  is a powerful, lightweight, yet full-featured screen capture tool that allows you to easily capture and annotate anything on the screen including windows, objects, menus, full screen, rectangular/freehand regions and even scrolling windows/web pages. You can choose to send captures to editor, file, clipboard, printer, email, Word/PowerPoint document or upload them to your website.

FastStone Screen Captures boasts a pretty impressive list of features as well which would make it ideal for use as your primary screenshot utility as well. This utility is shareware which means if you like it and continue to use it, you should pay the author the one-time fee.