Rear wheel for a Ducati Racer Motorbike. Sonic's spinning power, even post-mortem, coupled with the power of the bike, will have me streaking across countries & over water in a matter of minutes. Or flipping upside-down & cracking my skull open.
Also, slice him into 4 slices & use him as spinners on my car. Drive closer to other cars to puncture their tires.
ALSO, paint him orange & walk by an outdoor basketball court, & pass it in over the fence. See people try to play BBall with it, & laugh.
YET ALSO, as a cooling fan for my PC.
YET AGAIN ALSO, as a paper-shredder.
1 MORE ALSO, use his spines to make false teeth for the needy elderly.