Easy finger chording with zero to 2 strings fretted. GDGD tuning which makes an open G. I used the 5th, 4th, third and first strings from a standard set of strings for the LPG and the mandolin.
There would be other sawmill type tunings, such as DADA for open D using the low four strings from a six string set- the finger chords would be G and A and Bm.
EBEB for open E tuning - also using the low four from a six string set. The finger chords would then be A and B and Cm.
And there would be more. It is all about strings relationships to their fellow strings.