I will start posting some silly prototypes here, and will update over time if I add or change something.
Most of these can only be used by summon commands and might be useful for educational purposes.
The Water Field, summon
WaterField.xcWaterField to insert it.
It's a physics affector with a destroyable core inside.
Contains informative code on creating a spherical non-solid collision system and making a player swim in a non-water zone, should work on network games (not tested).
The antigravity addons, summon
AntiGravity. AntiGravityPlatform and summon
AntiGravity. AntiGravityGearThese reduce a player's gravity artificially, just get the gear or simply jump from the platform without using air control and you'll be able to fly way high while others can't.
The antigravity platform can be destroyed.
The platform contains informative code about creating an external collision hull that forwards damage to the platform pawn.
The half-assed hoverboard, summon
HoverBoard.xcHoverBoard to insert it.
Jump on it, crouch and start driving, can be destroyed as well.
Contains a platform that forwards damage as well, usage of Attach and Detach events, and usage of antigravity code, should work well on net games (not tested).
The hoverboard doesn't transfer velocity to jumps, get hit and say goodbye to it.
The ninja rope, summon
NinjaRope.NinjaRifle to insert it
Find a proper ceiling, and start swinging around like spiderman, you can even change weapons while hanging and shoot.
Contains informative code that makes a falling object hang like a pendulum, works clientside.
Air control allows a player to swing and gain acceleration.
The actual rope is invisible, wasn't going to spend 30 minutes coding the rifle while 5 hours coding the effect...