This is the peg solitaire that I remember playing at my grandma's house almost every time I visited.

https://en.wikipedia.org/wiki/Peg_solitaire

https://www.amazon.com/s?k=solitaire+marble+game

This is built around standard marbles 5/8" ish.

The spacing allows for fat fingers to pick up the marbles.

The outer rim is deep so when bumped marbles don't go flying.

An optional dimple is included if you are using smallish marbles so they don't slosh around.

Step files and fusion360 files are included.

Enjoy.