I have two swings. (used to have more but am down to 2). I have rules just like Silver. If you can get up on them, you can use them. NO ONE is allowed to push or pull anyone else on the swings. I will not lift up or down and I absolutely will not push you on the swings.
I am slowly fading my swings out though because the kids just fight over them and I am seriously not getting 10 swings so....
I am buying a geoclimber for the little ones. I had a big metal one for the bigger kids but don't take kids past Kindergarten any more so it had to go.
The geoclimbers come in lots of different sizes for all the age groups. They are pretty reasonable priced and I think the kids would rather have one of them than to swing.
I plan on buying through this company:
http://www.domeclimber.com/index.php