Created two grenade ideas I had.. first one is the Hornets Nest.. Basically a player throws it, and when it hits the ground is releases a bunch of smaller grenades that create little explosions. And the second is a frisbee grenade.. basically its thrown exactly like a projectile from a gun and when it hits a wall/player it sticks to them, than explodes seconds later.
Ill probably make a few more once I get a few more ideas.. or if you guys want, you can give me some ideas and ill make them.