For teams that want a simple solution for Upper Hub but do not have the resources to build the Simple or Complex version. The following was made from PVC and PEX which you can purchase at most hardware stores. The PEX is not attached to the PVC, it just floats instead of the Tees. There is a PEX Coupler that keeps the PEX together.
I wish that FIRST would build more Practice Field Elements out of PVC because it is very accessible for most teams, no carpenters are needed.