Consider a slingshot design. Rubber surgical tubing with a leather sling or pouch to hold the egg. If you don't want the egg to break on landing, make sure the slingshot will accomodate a protective package for the egg. Or you could consider using a mouse trap and taping a spoon to it!!!!!!It worls Great!
Here's a plan; http://beta.tulsaengineer.org/uploads/MouseTrap.bmp
Using a grenade launcher attachment or Thumper, make a direct impact kill on an enemy.
To make a homemade beyblade launcher without launcher pieces, you can try using a rubber band attached to a stick or ruler as a makeshift launcher. Simply loop one end of the rubber band around the beyblade and pull back on the other end to launch it. Just be careful not to apply too much tension to avoid damaging the beyblade or hurting yourself.
You can run TS3 without the launcher. Simply go to C:\Program Files\Electronic Arts\The Sims 3\Game\Bin (default install path) and run TS3.exe. The game will still recognize anything you've installed via the launcher. For convenience, you can just create a shortcut to that exe file on your desktop and start the Sims that way. You'll still need to start the launcher to install sims3.packs but you could completely avoid the launcher if you learn how to make s3packs into packages and how to install them.
go on dangeroulyfun.com
use a lawnmore
You can make 25 cents without using dimes or nickels by using one quarter or twenty-five pennies.
It's actually very easy... All you have to do is to fix together a box-like structure (you could use a beyblade ripcord launcher) and a piece of elastic string. Attach the string to the launcher.
Stretch a rubber band between your fingers.
Make your own
no
Stretch a rubber band between your fingers.