I fulltime solo, used to have composting toilet in the trailer I had earlier made out of cheap amazon plastic camping toilet, 3 gal bucket, fancy urine diverter and laundry detergent pee bottle and a pet tray underneath it all
Find this takes too much space.
Made new one out of 5 gal bucket, cheap walmart funnel, detergent bottle, composting bags and cheap toilet seat/lid that snaps onto the bucket. No smell and perfect size for one person. I use Feline Pine pellets from any Walmart and I believe it controlls odors very well, that coco cour stuff requres buyng it from amazon and didnt like it anyway. If anything spilled it'd stay within the bucket container, another benefit.Toilet paper goes into the #2 bag, not sure how itd work with real composting toilets, I have no desire to put dirty TP elswhere. If one is real concerned about smells can put gamma lid onto the bucket when driving.
And I got big back water tank and flush toilet, no desire to use it. I tried peat moss and coco coeur was not impressed. Plain pine sawdust also got nice smell to it to control odors. Sometimes drop few drops of fir/pine essential oils into the bucket too. Peat moss just creates earthy smell disnt like it.