Celebrating other people's religious festivals for fun a profit?

I celebrate Christian festivals such as Christmas and Easter even though I'm not Christian; I've decided to extend this practice to more *useful* features of religious observance than scoffing too much turkey and chocolate. In this vein I am
*giving up all alcohol for Lent
*going to clean the house top-to-toe in preparation for Passover, although I have no intention of actually celebrating Passover (nor of throwing out all the bread etc.)

I have mad a fabulous start to this plan ahahahaha by developing sinusitis which makes me feel like some fucker punched me in the eye. Sudafed seems to be working.