Depends on your CAD skills. Mine are slow!

You might be able to use something like this:

https://www.thingiverse.com/thing:5746751

https://www.thingiverse.com/thing:2230554

I have a couple of these in my range bag and they work well.
https://www.thingiverse.com/thing:1596147
https://cults3d.com/en/3d-model/tool...ine-thumbsaver