[name_f]Sage[/name_f] came to mind right away – that feels like it could fit! Outdoorsy, gender-neutral, short, and wise!
Some others could be…
[name_m]Rocki[/name_m] / [name_m]Rocky[/name_m]
[name_f]Reese[/name_f]
[name_m]Kit[/name_m]
[name_f]Sasha[/name_f]
[name_f]Winry[/name_f]
[name_m]Shay[/name_m]
[name_m]Kite[/name_m]
[name_m]Raffie[/name_m]
[name_f]Lou[/name_f]
[name_m]Adair[/name_m]
[name_m]Joss[/name_m]
[name_f]Keedie[/name_f]
[name_m]Sinclair[/name_m]
[name_f]Scottie[/name_f]
[name_f]Marlo[/name_f]
[name_m]Jaz[/name_m]