Singing bowl advice

[Nomad]

Been attending a few retreats last year that make use of singing bowl (mainly as a gong/caller) and I would like to try using one at home with my meditation.

I don't have any shops close by I can go to and play around with some so I will be making an online purchase.

 

I would like to know how others have used these as a tool during meditation with success or failure  and any decent online stores to purchase from and what to look for.

 

Thanks.