These are additions to the Vzbot printer.
I couldn't buy any foot matching model so designed it- uses M4 screw.
Regarding bowden holder, this one is flexible.
Z belt tensioner is not needed as a mod, however if you cannot get proper size of closed loop GT belt, this can help for belt tensioning.
Foot and bowden holder to be printed with TPU (0.2 and 3 perimiters advised).
Z belt tensioner with ASA/ABS or PETG (0.2 and 3 perimiters advised).
The author marked this model as their own original creation.