I use silent spinners.
They're not completely silent but unless you are keeping them in your room (like me ) that shouldn't be a problem. the come with a stand but your can also attach them to wire cages. I'd give them 7 or 8 out of ten.
Silent spinners are wheels, I think they come in different sizes (not too sure). I have had mine for just under a month. Umm, it NEVER gets stuck it can always be turned or spun. However ever so often it can star making a noise like every tenth turn but that can be sorted out by just giving it a quick spin with your hand.
In the picture it does look too small for that mouse but they fit my mice like gloves.
If you cant find them in australiia I think pets at home ship if you order over the net (i think), thats if you dont have pets at home where you are.
Come to think of it, it probably is a rat. Because that is the largest type of silent spinner and i have the medium size and its more than big enough for my mice and that wheel is too small in the picture.....
I'm with petey, i think its a rat too!