Took the awesome model made by ShadowBons and did some Meshmixer/Tinkercad (noob) trickery to create a phone stand. You'll see the head is kinda lower poly because I couldn't import the original into tinkercad so had to reduce the triangles. Theres two versions here:

Freestanding Psyduck - You might have to play with infill settings towards the base to make it heavier in order to support the phone, hopefully it should hold

Supported Psyduck - Same model but there's an additional base leg at the back to hold the weight of the phone so it doesn't topple

Notes:

• I originally printed the freestanding version but the legs were too far forward and it would topple with the weight of my phone (Galaxy Note 10+), so I created the additional base leg and superglued it. Updated the model so that the legs are further back to support the weight, but also just provided the supported version too as I can confirm it holds well.
• I printed the feet, base leg, and hair strands at 80% infill (customised within Cura), rest of the model was done at 25%

Print Settings

• No Supports
• Mixed Infill