"Nice" lights on warning

[Griffit]

Can anyone recommend a "nice" sounding tone that I can use for a lights on warning tone? I left the lights on and flattened the battery in my TVR for first time ever in 10 years of ownership and as dash is out for another job thought I would fit one. My e90's bong or a Corsa C's tone are both ok. Happy to buy in shops or online or get from a breakers.

Any recommendations and links appreciated