The companies that make the sample pads also make mounts and stands for them. The mount that connects to the bottom of the pad will typically come with the pad when you purchase it. However, the stand will usually need to be purchased separately. Any cymbal stand will do the trick if you have a spare one. You'd just need to remove the top part that has the cymbal arm. Make sure the stand is double-braced and sturdy; otherwise, it won't support the weight of a sample pad.