Make:

• HOW TO - Make fake barf!
• HOW TO - Make a USB remote control receiver
• How-to: Cast concrete planters using packing inserts
• DIY: UV Light Box
• The van that thought out loud
• DIY Automatic ball launcher for dogs made from an old scanner

Another feature one could add for safety is something called a 'pneumatic fuse.' One can get these at McMaster-Carr

Sorry for the out-of-sequence posts, got a new hybridized LAN, still kinda hinky, anyway. . .
The Variac, while a cool device, doesn't provide isolation, surprisingly enough, so if you go this route, also deploy an isolation transformer. With a DC solenoid, battery operation could be achieved. Either add some anti-spike hardware, or be sure to employ a robust switch, both in terms of through current and blocking potential.

Canon:
a rule or especially body of rules or principles generally established as valid and fundamental in a field or art or philosophy; "the neoclassical ...
a priest who is a member of a cathedral chapter
canyon: a ravine formed by a river in an area with little rainfall
a contrapuntal piece of music in which a melody in one part is imitated exactly in other parts
a complete list of saints that have been recognized by the Roman Catholic Church
a collection of books accepted as holy scripture especially the books of the Bible recognized by any Christian church as genuine and inspired

Cannon:
Bigthing go BOOM!

That's hard. You can make a pretty damn big mess really quickly with a couple rolls of toilet paper, a shop-vac and a paint roller.

@featheredfrog: Thanks! =]

You realize I'm going to have to try the shop-vac thing now. You should write that one up.

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