Nikon, Canon, Adorama, Photojojo, Fotodiox, and others are selling cups and insulated mugs that look like lenses -- they're pretty cool!
Canon has cups and mugs that look like its 70-200mm lens, its EF 24-105, and more.
I know about Nikon's AF-S 24-70mm f/2.8; there may be more.
Prices appear to be in the $25 to $35 range. Here's a Google shopping results page for Nikon mugs or Canon mugs.
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