“ The bloated corpse of a decaying gigantic creature is necromatically enhanced and fused with an undercarriage for use as a grisly and terrifying airship. The methane gas from tissue decay keeps it buoyant in atmosphere, but it can be even more flammable than hydrogen if it escapes...”
“ Once a year there is Birthday. On this day everyone celebrates their birthday regardless of the day they were born. In practice anyone born in November or December waits till the following Birthday. It is a combination of your birthday and Christmas,
Birthday tree
The magic version of this is empowered by a god to reward their followers once a year. a present will appear Birthday morning. it will be empowered by how well a member of the household provides service or offerings to the god. They vary in power level at GMs discretion.”