I actually don't mind typing: to me, it sounds like ideas. It's also regular enough to become part of the background, whereas something like music isn't, because it's too variable.
>my Bose noise cancelling headphones are worth their weight in gold.
I'm going to be that obnoxious guy: Amazon lists Bose QC 15s (the model I have) as 7.4 ounces. The spot-price for gold right now is about $1,700 per ounce. Are they really worth $12,580?