You can just take a picture of a pile of dice, a pile of rice, or a tree, patch of grass, etc, and compute a secure hash/whatever and base six it to get the rolls.
Is that actually better (in practice, not in terms of entropy) than /dev/urandom? I have a lot less trust in my ability to successfully scrub a picture from my phone that deterministically created my passphrase.
It offers protection in the event that your /dev/urandom is compromised. Otherwise no.
(Of course, if your /dev/urandom is compromised then whatever process you use to compute a hash of a photo is likely compromised as well.)
Extra points if you hold you face really close and count in a dead language. You can also make ordered hand gestures in stead of counting on your fingers. Be a wizard about it!