Throwing
Throwing is a Jcraft Mechanic that Stands can use by holding down the pick block button (Default=Middle Mouse Button)
If a block is thrown, it'll be placed on the floor unless specified otherwise below.
If an item is thrown, it'll act as a dropped item.
Items thrown will bounce off blocks depending on the angle their thrown and the hardness of the block they're thrown at. The lower the hardness, the higher the bounce.
Special Interactions
Weapons
If a melee weapon is thrown, it'll function as if you hit the target with that weapon. Enchantments work and stay after thrown.
Arrows and Tridents
Arrows and Tridents can be thrown and will act like their shot/thrown version. This applies to arrows of potion effects such as an Arrow of Harming.
Explosives
TNT, TNT minecarts, and End crystals can be thrown and will explode on contact. This is not the same as a vanilla explosion.
Slime
Any slime type blocks or items will bounce when thrown.