The ones that John found above work great. I painted ours black before installing and you can hardly tell they are there. One thing we did find with the Arizona heat, the adhesive softens enough that they will release. Either out a Velcro strap through the handles for insurance or put some gorilla glue on the pads. I glued ours on and so far so good.

i'm 3 months into travelling with them. Never had a issue with them coming stuck or opening. Its truly a cheap and cheerful solution.