A bucket toilet is a simple toilet for solid waste when boondocking; 1) The bucket can be dead simple or a bit more complex.
Remember that liquid waste must be dealt with separately.
Yes these are instructions on how to poop in a bucket.
Remember that if you have guests you will have to instruct them how to use the bucket.
The media can be all types acceptable in a composting toilet plus:
A makeshift seat can be made with a pool noodle (slit and bent in a circle). Commercial bucket seats/lids (“luggable loo”) resembling residential toilet seats are available.
A compost-style bucket toilet is basically the solids portion of a DIY composting toilet.
HOW TO MAKE PORTABLE TOILET BUCKET (YT video) by Russian Daycare.