Yer go for a ball python. They make great little pets, and most seem to enjoy being handled where most snakes just tolerate it. They are easy to look after as long as you find one that is a good feeder, and stay relatively small, and dont need a big enclosure. They are nocturnal but mine is out more in the day time than the night and constantly seems pretty active. Whether many of them are like this I am not sure, but mine is. Good luck with whatever you choose though.
Ball Python (Chunk)
Yellow Rat Snake (Jasper)
Irian Jaya Carpet Python (Monty)
Common Boa Constrictor (Noodle)