Offerings at the Altar - Gifts for Stevie

[DashingDan]

Within the last 10 years there was a review of a Boston solo SN show in the newspaper that opened with a detail of rock and roll rituals. The reviewer rattled off a few (none come to mind, but I recall them to be all credible), and then he mentioned the ritual of bringing gifts to Stevie and how it's has to be seen to be believed.

I remembered this review today and it got me thinking, can anyone tell me the genesis of bringing offerings to the altar? It was being done during the Belladonna shows apparently (as documented from the HBO concert)...so my question to you all is when/where did it all begin and why are we compelled to give her stuff?