How to place items on the floor and pick them up in Minecraft(JAVA)

Today I will show you how to place and pickup items on the floor in Minecraft.
COMMANDS:
/kill @e[type=minecraft:armor_stand]
WEAPON:
/summon armor_stand ~0.5 ~-1.91 ~ {Invisible:1b,Invulnerable:1b,NoBasePlate:1b,NoGravity:1b,ShowArms:1b,Rotation:[270f],Pose:{RightArm:[180f,0f,90f]}}
FOOD:
/summon armor_stand ~0.5 ~-1.3 ~ {Invisible:1b,Invulnerable:1b,NoBasePlate:1b,NoGravity:1b,ShowArms:1b,Rotation:[270f],Pose:{RightArm:[180f,0f,180f]}}
BLOCK:
/summon armor_stand ~0.5 ~-1.2 ~ {Invisible:1b,Invulnerable:1b,NoBasePlate:1b,NoGravity:1b,ShowArms:1b,Rotation:[270f],Pose:{RightArm:[160f,-40f,183f]}}
OTHER:
/summon armor_stand ~0.5 ~-1.3 ~ {Invisible:1b,Invulnerable:1b,NoBasePlate:1b,NoGravity:1b,ShowArms:1b,Rotation:[270f],Pose:{RightArm:[180f,0f,180f]}}

[@CosmicDurp]

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