Try using a fishing rod with a treble hook and a weight.
How do we get a frisbee down from way up high on a barn roof? Moss covered, worn out roof, slippery when wet. Expensive frisbee. *****News flash: The frisbee was recently carried down to earth again by the a strong gale!
There are expensive Frisbees? I would try using a hose and washing it down with water.
Call the fire dept
Hooray-hurrah: The frisbee blew down all by itself some nights ago during strong gales from the northeast!
The most important lessons my grandsons nextdoor may learn from this are
1. Don't play frisbee near that tall barn. 2. Always wait & don't crawl out on the condemned roof because sooner or later a strong gale will carry it down again anyway.
Thanks again for all the replies, & we thought you'd maybe care to know.