I’m planning on someday using [name_f]Patricia[/name_f] to honor a family member, maybe as a first, maybe just as a middle. What are some nicknames beyond [name_u]Pat[/name_u]/[name_f]Patty[/name_f]/[name_u]Patsy[/name_u] and [name_f]Trish[/name_f]/[name_f]Trisha[/name_f] you can think of?
I don’t mind if the nickname’s a stretch, it probably will be. I think most nicknames that work with [name_f]Penelope[/name_f] would work for [name_f]Patricia[/name_f].
So far I’ve thought of…
[name_u]Reece[/name_u], Pepsi, and [name_u]Ricky[/name_u]. I’d love some opinions on these.
I think [name_f]Trixie[/name_f] could work.
I would much prefer [name_f]Trixie[/name_f] to [name_u]Reece[/name_u], Pepsi, or [name_u]Ricky[/name_u].
[name_f]Trixie[/name_f] comes to mind and is less of a stretch than what you have so far.
[name_u]Perry[/name_u] is a stretch but it would also work.
I much prefer [name_f]Trixie[/name_f] and [name_u]Perry[/name_u] to the rest, with [name_f]Trixie[/name_f] being my favorite of the bunch. I love [name_u]Reese[/name_u] Witherspoon as an actress, but [name_u]Reece[/name_u] has always had a decidedly masculine sound to me. And I don’t like [name_u]Ricky[/name_u] or Pepsi at all, personally.
Nicknames that come to mind:
[name_f]Trixie[/name_f]
[name_f]Pixie[/name_f]
[name_u]Perry[/name_u]
[name_f]Sia[/name_f]
Cici/[name_f]Cece[/name_f]
[name_f]Trixie[/name_f]/[name_f]Pixie[/name_f] and Cici/[name_f]Cece[/name_f] are my favorites.
The obvious nicknames are quite dated, aren’t they? I like the suggestion of Cici. [name_u]Pax[/name_u]? Maybe [name_f]Atty[/name_f]/[name_f]Addy[/name_f] from [name_f]Patty[/name_f]?
Maybe [name_f]Pia[/name_f]?
Most of the nns you listed I’m not too fond of (although I like [name_u]Patsy[/name_u] best, and then [name_u]Reese[/name_u]). My first idea was [name_u]Pax[/name_u], simply because I love [name_m]Patrick[/name_m] nn [name_u]Pax[/name_u], but my second ideas were [name_f]Poppy[/name_f] and [name_f]Pippa[/name_f] ([name_f]Pippi[/name_f]? I think [name_f]Pippi[/name_f]'s adorable!!!). I think [name_f]Pia[/name_f] and [name_f]Ria[/name_f] are cute, and even [name_f]Tia[/name_f] or [name_f]Sia[/name_f] would work, I think (although [name_f]Pia[/name_f]'s my favorite there). I would probably vote for [name_u]Pax[/name_u] or [name_f]Pippi[/name_f], personally, though. 
Good luck!
I think [name_u]Pasha[/name_u] would be a pretty cute nickname for [name_f]Patricia[/name_f]!