Eric,
Do you fly? Will you be with him when he flies?
If goth answers are yes:
An indestructable plane, but may be more than you have in mind, are the Zagis.
Not real easy to fly but have been used as trainers because they are so rugged.
I'm not very familiar with the small Wal Mart type foamies that are becoming popular.
Good Luck,
KW_Counter