With just two command blocks and hardly any effort, you can build your own dreams in Minecraft.

Once you go to sleep in Minecraft, this creation will teleport you to an armor stand.
When you press "get up" you automatically end up next to the bed again.

Instructions:

First you have to create the armor stand in the place where the player then "dreams": /summon armor_stand ~ ~ {Invisible:1,Marker:1,NoGravity:1,CustomName:Dream} "Invisible" makes the armor stand invisible, "Marker" makes it basically indestructible, "NoGravity" makes it float and "CustomName" lets you name it, in this case "Dream". In the lower command block this command comes in: testfor @p {Sleeping:1b} This command checks if you are asleep. If "@p" takes "@a" it will affect all players on a server and if you only enter your player name (with tab) only that player will "dream". In the top ones: tp @p @e[name=dream]