This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/kNjnva2LjJc
I remixed this tinkercad design into a Cell Phone Holder for a friend of mine. https://www.tinkercad.com/things/ezqL2sRJeth-frog-parts-fits-easily-together
This design is a single print with no assembly and the Tongue is at the right angle to lay your phone on to rest it on a desk.
You can print this with 15% infill, and I would suggest a brim to ensure that the bridging for the tongue stays stable.
frog_cell_phone_holder.stl | 1.2MB |