I love [name_u]Parker[/name_u] on either a boy or girl. This is super tough to come up with nicknames. I’m not the biggest fan of “P” just because it sounds like pee. My suggestions might not be any better but I’ll have a go.
[name_m]Par[/name_m]
Ark
[name_f]Arkie[/name_f]
[name_f]KiKi[/name_f]
[name_f]Poppy[/name_f]