Oh yeah, the Grateful Dead was in the house ... The band's iconic skull logo was prominent in the ever-changing graphics on stage. Their well-known dancing bears posed for photos with attendees.

And just like their decades of musical output, the Grateful Dead are unbeaten when it comes to merch. From the Stealie skull logo to Bertha to the dancing bears, the Grateful Dead have enough ...

From mountain bikes to gravity bongs, there's something for every fan's wishlist - besides tickets to a show at Sphere, of ...