as far as pythons ive had black bloods, carpets, balls and a ringed python. think thats it.
Boelen's are interesting snakes. i know a guy down in west Texas who has them or used to have them. cranky old man but fun to chat with.
dart frogs i have azureus and Surinam cobalt tinc's. i also have 3 species of Mantella's including a pair of laevigatta that are doing their best impersonation of rabbits, going to be moving them out of a 25 gallon and into a 60 as soon as we move into the new house. i dont find feeding them a pain. if yah get the right supplies fruit flies are easy to breed in mass quantities with minimal effort.