I posted a new story last night - The tortoise and the igbako. In line with other tortoise stories, the tortoise gets greedy and is subsequently punished. But I feel the punishment is unfair in this case since the tortoise was trying to feed every animal during a famine - an admirable act even if his goal was self-aggrandisement. The water goddess who supplied the magic igbako didn't give a reason why tortoise should keep igbako secret, so the need to feed fellow animals would have trumped obeying the goddess's wish.
In case you're wondering, the igbako is a Yoruba word for a food utensil traditionally carved out from a calabash (there are plastic equivalents now). It's used to serve local dishes such as eba, iyan and amala - they all have a consistency like stiff mashed pototoes.