ReadWrite Has A List of Apps For "Packrats and Clutterbugs"

I like the sound of MyThings.
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3. MyThings: MyThings also offers users a chance to index their physical objects and keep track of receipts and warranties in one place. One of the interesting components of MyThings is that in the event of a break-in, your MyThings database can be immediately sent to Trace.com - a tool that tracks lost and stolen property.