I would like to know how to make a floating item in Minecraft.

Here is a great example made on the Hypixel server:

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2 Answers

There is a nice Bukkit plugin names ShowCaseStandalone that allows what you want.

Otherwise, there is a second solution. As explained by Skylinerw on minecraftforum.net,

You can summon the item entity riding an invisible armor stand that has NoGravity set to 1:

/summon Item ~ ~5 ~ {Item:{id:minecraft:stone,Count:1},Riding:{id:ArmorStand,Marker:1,Invisible:1,NoGravity:1}}
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You dont even have to use a plugin, you can do that with commands. There is a really good editor which generates the command for you:

In your case there are 3 Armor stands with diffrent arm positions, all of them are invisible holding a Iron sword.

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