I use the one Cynical posted for you, but I did get it in grey as it was cheaper!!! lol
Works great.
However, for now, that video sure had a good idea and you could try that first to see
if that solves the problem before spending the 18.00 for a cooling pad. And if you
don't have Amazon Prime (I do it is worth it) then you have to pay shipping too.
So, I hope the bottle caps work for you!!!!
Love and hugs,