A man needs a space to do his important work; his thinking, his beer brewing, and most of all a place to get away from the hustle and bustle of the day.
A shed affords you such a space, big enough for your tools but not so big as to feel like an endless void.
A small stool, maybe a fridge, and long bench for building and thinking.
Put a lock on the door so that only the privileged few can enter and your set.
This is your refuge, your escape, your mancave.