Well I don't know if there is TRULY a safe way, but inside on the carpet is better than outside being freezing and falling on your bum! We found this idea one time when I was looking on the net. It is a blast. I told Bryan about it and he thought it would be fun to try too..but for now it was just for Kambria and I.
So you take wax paper and put it on the bottom of your shoes and wrap a rubber band on it to make it stay...then you take pictures of course...and then go sliding on your carpet. It is slippery, but not too bad, but enough to make it fun!!! I am sure older kids would enjoy this more but Kambria seemed to have fun.