Free Ideas!

Here are some ideas for products or solutions that could be out there. Exploit them if you wish -- I will never get around to it for these ones:

• Videoconference restaurant -- share a long-distance meal with friends
• Improved combi boiler to avoid cold showers
• Free energy using a space radiator
• Renewable transport with infinite-range electric vehicles
• Kitchen smoke alarm
• Rocket backup engine for plane
• Inverted Bottle Stand
• Coin Balance
• Camping Security Anchor (how to lock up your bike, etc, on a campsite)

PS You can't patent these ideas, because this page is public and so prior art exists. And this site appears to be regularly archived at http://web.archive.org so that can be reasonably proved. Publishing prior art like this was the idea behind the defunct http://www.priorart.org, which now links to an interesting commercial service http://www.ip.com.

These were ones I listed which it turns out have already been "done" at least in some respects:

• Digital Baby Monitor (long, quite serious)
• Distinguishable Drinking Glasses
• Glance-Free Watch