I saw these things on tv a few weeks ago, they are a small plastic cylinder that look like a napkin ring, and they are using for practice. Now I am not one on gimicks but these supposedly fly like a true golf ball and even feel like a golf ball when hit but they have a very limited distance but will to hook and slice just like you regular shot.
I have a fairly limited space to practice and I thought for S&G's I would pick up a few and I did find a dozen on ebay for $15 so I ordered them.
When they came I showed them to my 20 yr old son, he plays golf 3-4 times a week to my 3-4 times a month, and he gave me a look like boy you got ripped.
I did not tell much more than they were a practice ball so he grabs a club and heads out to the yard and comes back in 10 minutes and says "Dad these things are great, they even feel like a golf ball when you hit them"