Along with the ideas mentioned above, don't forget the leopard skin (synthetic of course) grill covers or the burnt orange shag carpet upgrade. Alas, what about drivers that are translucent? It could have pretty lights that flash behind the drivers that have a logo that say “digital”. I think Wal-Mart had these Maybe it was Kmart, I don't remember.

M80's VP150 QS8's Earthquake SuperNova MKV-15
Integra DTR-7.4 Outlaw 755 Outlaw M200's Outlaw ICBM