[DeTomaso] Dumb question: old helmets

[Charles Engles]

Dear Forum,


                Really dumb question:  what is the best thing to do with old out of date racing helmets?    
             I have accumulated three over two decades of track shenanigans.   I hate to throw them out.    I shouldn't give them to my nephews because, well, the helmets would probably be used for very creative and unauthorized purposes.          
            Any ideas?


                            Warmest regards,  Chuck Engles