I plan on building my own shed soon

It will be 2x4 Timber (Probably ACQ Hardwood or untreated pine)

Plexiglass window, gravel , cement blocks and corrugated iron

and OSB

Might even do Sandbags for sound dampening and insulation

between the timber/OSB

Ill be making mine with

Rain Tank

12v DC wiring

Ethernet Ports

Tiny Rocket Stove

Skylight