What are some home materials that I can use to make a Bio-wheel? I don't really want to buy one because it's rather expensive (10 dollars here!). I do not have a bio-wheel filter adjustable to bio-wheels but I found some ways to manipulate the water flow and stuff. Thanks for any suggestions. 
Also, if it's possible, PLEASE post pictures!
Also, if it's possible, PLEASE post pictures!

would buying one of those cheap bio-wheel filters become more of a bargain? I remember seeing the smallest (forgot which company) filter for 15 dollars.
I am sure I have seen some plastic ones that when the cotton thread is finished it reveals an already ridged plastic surface. It would be small but it would be ready to go. I am sure you could rig that up to the outlet of your filter.
I think a thin plastic or stainless steal rod to thread the reel(s) onto then you just need to attach it in the water flow.