The Hebrew alphabet, which is not just used to write Hebrew but also Yiddish, Ladino and a number of other Jewish languages, is aesthetically one of my favorite scripts. So here is a way I propose of writing Toki Pona using it:
A אַ
E ֵאֶ
I יִ
J י
K ק
L ל
M מ
N נ
P פ
S ס
T ט
O וֹ
U וּ
W ו
The goal here was to use a minimal number of letters and take advantage of diacritics wherever possible, while still making it almost immediately readable to anyone familiar with the Hebrew alphabet. The result is (kind of) a 10-letter alphabet for Toki Pona.