Beverage Can Lid

My University doesn't allow beverages, that aren't in an closable container, near the computers. Which is reasonable. But I like to drinking out of cans.
Therefore I designed a lid that can be put on top of an beverage can to prevent spilling if the can should fall over.
With the Lid installed you can knock over a full 500ml can without spilling more than a drop.
(only non carbonated beverages tested)

I also designed a heavy duty version, to prevent spilling if you drop the can off the table. If the can is full the impact is hard enough to deform the can so the normal lid will fly away.
I hope the HD Version will prevent that, but I have not tested if it really works yet.

Disclaimer: Don't rely to much on the lid. Your Drink could still spill and make a mess, especially if carbonated. This design is only to prevent the worst

Also: It works as an mini Frisbee too