Stall Bars, MN PE5

I have been able to avoid using stall bars until now. I am now on MN/PE5>iM and can't find a suitable substitute. I used rings  for MN PE4 and can do the same for MN PE5 but moving up the ladder on MN PE5>iM seems to be problematic...so I have two questions:

1. Does anyone have ideas for substituting the stall bars with something else?

2. If not, recommendations on making one/buying one?

Thanks!

You could use the end of monkey bars, there are usually rails climbing up and a protruding horizontal bar at the top. Nice substitute if there's a park near you.