Anyway...I found a cool item and thought it would be a cool thing to have so I bought one. Turns out it would be a great can or bottle holder.
Here's a link to Case Logic's page...I'll copy the info here too.
Case Logic
QUOTE
Product Features
Soft, neoprene catch-all holds cell phone, pens, receipts, glasses or other small, reachable items
Bendable, adjustable arm hooks into air vents or other nooks on dashboard for secure attachment
Fabric: Specialty
Size: 4.75" x 4.25" x 3.5"
Weight: 2 oz
Warranty: 25 Years
Price: $4.00
Soft, neoprene catch-all holds cell phone, pens, receipts, glasses or other small, reachable items
Bendable, adjustable arm hooks into air vents or other nooks on dashboard for secure attachment
Fabric: Specialty
Size: 4.75" x 4.25" x 3.5"
Weight: 2 oz
Warranty: 25 Years
Price: $4.00
Here are the Case Logic pics followed by 2 pics showing a 20 oz bottle inside.
My last pic shows the holder leaning forward...this only the case because there is nothing supporting it from the back...In a normal situation it would stay upright like in the first pic.