You see QR Codes everywhere. Advertisements, marketing materials, commercials, and even billboards in the airport. Generating your own QR Code is a free thing to do online. The cool thing is to use a service that tracks your scans and provides metrics. Microsoft Tag has recently announced it is migrating to the ScanLife platform within two years. ScanLife will provide 3 personal QR Codes and tracking for 500 scans for free. I use QR Codes on my resume and they can point to anything - Picture, Video, Website, Cloud Content, Blog, etc.
Microsoft Security Essentials
It's very controversial that antivirus software is something that I DON'T use :). In most cases, the software is more harmful than having an actual virus. I enjoy discussing the issue but unfortunately out of scope for this post. If you must use antivirus software personally, use Microsoft's Security Essentials. It's free for home users and updates automatically via Microsoft Update. Security Essentials has recently been rated #1 by several major tech publications.
When your hard drive fills up with too much data, it's hard if not impossible to find the large data quickly and easily. Enter TreeSizeFree. TreeSizeFree is a free utility that comes in installable or portable flavors. While there are other open source projects that produce these GUI, TreeSizeFree is by far the best working and best looking. Scan results allow you to drill down and open the folders directly to the largest offending files for removal.
YouGetSignal.com is a great, quick way to allow end users to test their own firewall port statuses. The external website will attempt to scan all 65k firewall ports, 25 most common ports, or custom ports. Great for troubleshooting network issues or confirming the successful configuration of a new firewall.
Klein Tools 10n1 Screwdriver
The Klein Tools 10n1 Screwdriver is the best tool to keep in your laptop bag. While there are many "X"n1 tools on the market, the Klein or Craftsman brands both have durable designs that prevent part loss. Premier brands Klein and Craftsman offer easily accessible lifetime warranties. Most Sears stores will swap out the tools without a receipt. Paired with pliers, this tool replaces the need to carry an entire tool bag.