Garrys mod best invention you have made

[Torque2100]

The Doomtub.

It's a chair stuck to a bathtub with floatballs at the four corners and thrusters to control movement (Sort of). It's primary armament is roughly a dozen turrets mounted on the front. Because of the way it's constructed the Doomtub is essentially invincible. The chair sits inside the tub so most NPCs just end up shooting the bathtub. However I can barely control the darn thing so mostly I just spin wildly through the air spraying bullets from my turrets until I get bored.

 

[username sucks]

Spider Car.

I built a car with 8 wheels, disabled gravity, and placed downward facing toggle-able thrusters to simulate gravity. But since the gravity is relative to the car, it will stick to any surface, even the ceiling of the skybox. I also built some manually controlled stabilizing thrusters in case I get stuck spinning in the sky.

Especially fun to use in races. One of my friends built a racetrack in the sky and challenged me, so right from the start I drove off the edge. He thought I fell off so he drove slowly to the finish, thinking he had won, then I flip back up from driving upside down and win the race.

 

[1FOfPokemon]

Playing with a friend's copy (I don't own the game) I made a slingshot with poles, stretchy STRINGY STUFF, and a box. I used the gravity gun to pull the box and fling things super far.

I believe the stringy stuff was elastic