Protip: you can easily move large boulders

[The Indomitable Snowman]

If you press ctrl+space to interact with nearby objects, you can interact with large boulders and equip them in your throwing slot, even though they weigh a lot. once you have the boulder equipped, you can drop the boulder right where you're standing and move away, effectively moving the boulder away 1 tile.

[Geothermal1159]

I have an even more effective method of moving them.
Pick up the boulder > equip into throw slot > throw massive boulder.
Now you can move boulders even faster than 1-tile at a time or even use it to block yourself off from undesirable enemies in a pinch.