Ipad Holder for tripod Amazon basics.

You only need two zips tie to ensemble base with Holder.

https://www.amazon.es/gp/product/B005KP473Q/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Print options - Supports in base. Infill 20%

Used https://www.thingiverse.com/thing:193647 for nuts and bolts.