Archive.org is my favorite vice.

A lot of my workday is spent on Archive.org, watching and capturing old 16mm educational films much like this Sparkling Gem of a video, featuring a jumpsuit-wearing safety superheroine from space:

Archive.org also has a great audio resource section on their website, chock full of interesting little things to listen to. Here are some of my favorites:

• The Conet Project: WXYC used to have this compilation, and I played the hell out of it. Creepy recordings of spy / number station broadcasts.
• Netlabels: "This collection hosts complete, freely downloadable/streamable, often Creative Commons-licensed catalogs of (1500) virtual record labels" such as:
• Mirakelmusik: For fans of the Maurizio Bianchi single that's been getting a lot of play on WXYC this summer, I've been streaming his Mokushi XVI album all morning.

Have fun committing time theft today !