Decent idea, prohibitive cost. $29.95 for a bass drum pair is a bit high and 14.95 each for each leg of a stand is prohibitive, in my book. And you need a rug that velcro will hold to, to start with.
There is a company that sold little U shaped plastic/nylon pieces you screw/bolt to a rug that is far cheaper, not as easy to use as the velcro idea, but also can be easily copied with some luan. Gig stops or rug stops, they were called.
The 2x4 idea has been around for a long time for a bass drum stop. If they paint it, or better yet wrap it in inexpensive carpet matting, it can look good.
Mike McNany