Parallel bar substitute

I am on HBP/PE4, and looking forward I see parallel bars used for PE5 and PE6.  Any suggestions on alternate equipment, or where to get parallel bars that aren't designed for competition or commercial use?

Thanks! 

Hi Thomas, 

For the following exercises in the Foundation course many athletes use a simple dip station. For some you just need a single bar. 

Not sure where you live but I have seen parks with a great workout set up that would also be perfect for these exercises.