Hello BudRow,
I can't believe I missed this one,
A couple of Gent's over on the Cas City Forum got me started on Biodegradable Packaging Peanuts.
They are free and show up on the front step from time to time.
To check if they are Biodegradable just run a little water over one, if it disappears it's Biodegradable.
I cut the length I need with a Razor Knife, roll it to fit the case.
Some times one can see them burning in flight, might be an issue in dry conditions.
AntiqueSledMan.