Thank you for the many downloads. I have updated it for the first time in 6 years!
https://makerworld.com/en/models/570404
A tip as appreciation is welcome.
It is single Joy-con grip of Nintendo switch.
There is a button, so no strap is necessary.
Please enjoy!
Joy-Con Grip Mini is here
https://www.thingiverse.com/thing:4579170
Joy-Con D-Pad Button (Removable) is here
https://www.thingiverse.com/thing:3150809
Joy-con Grip (store the strap) is here
https://www.thingiverse.com/thing:2523187