This might be an option for any tiny home: Panda Small Compact Portable Washing Machine(6-7lbs Capacity) with Spin Dryer $169.99
Laundry POD - let's you wash small loads of laundry without electricity or water hookups.
Oh my goodness this thing is genius! $4.95 ... for the kids bathroom!!!
$110.95 - MiniWash Portable Washing Machine: A Lightweight And Portable Clothes Washer That Runs On Electricity.
How to Make a Portable Toilet and Shower
Reliance FlushLoo Flushing Portable Toilet - Gray
Make a portable washing machine with a plunger and a bucket. | 41 Camping Hacks That Are Borderline Genius
Coleman Outdoor Portable Oven/Stove
Toilet paper dispenser made from a 2 liter bottle - use for camping/fishing trips - keeps the toilet paper clean and dry.
prefab-home-freedomky -- excellent article at busyboo re this stunning eco-friendly prefab including floor plans, costs and link to architect/builder [ freedomky.cz ]