We’ve many covered portable apps in the past: you know, lightweight applications you can put on a USB drive to use on practically any PC. And while flash drives have increased in capacity and decreased in price, it never hurts to look at a super-small option. Enter Tiny USB Office at just 2.5 megabytes in size.The package includes a full productivity suite complete with an application launcher. You can create spreadsheets, documents, PDF files, databases and outlines just for starters. There’s an e-mail client, FTP app and MSN Messenger app as well. Many of the titles can save in standard Office file formats, but I’d probably try them before depending on them for any serious work first. Tiny USB Office is a free download for Windows only. I just might go dig up an old 128 MB flash drive I’ve had collecting dust for a few years now… could be a nice complement to the Eee PC or good for an older notebook the kids are using.(via Lifehacker)