I gave every character that uses TP a "Talisman of Preservation" and a "TP Ring"
there are some characters that have a wedding ring with TP regen or TP preservation already like Elly,Tsubaki and Ryoko in this case i use the Wedding Ring instead.
I also Use the Trickster Sphere in Ryen´s Ring so i can have TP regen and his good wedding ring. I also use crit orbs in every slot possible to get as as close to 100% as possible (Elly can reach 100% very easy i use protection 5% or AGI here instead) crits do like 300% damage in this game and are very strong.
i use Precision 10% runes and Aim 10% Spheres on all my damage dealers because i felt that my characters missed quite a lot and i personally hate missing in games, you can use health or mana here instead if you like to be tankier or like a bigger mana pool.
I use a "Ring of Mana" or a Sphere: Magic regen 5% on my Healers and Magic Damage Dealers and my Mira has protection +5% orbs and health spheres because she just has to stay alive.
You can also run Protection +5% and health on Tanks but i personally don´t like tanks that much in this game and if i do i just go full crit and aim/precision.
Aside from that i use a glyph and armor with the element i need and item´s with high stats and a lot of socket slots and the sphere: HP regen 5% is also very good on a Tank or another character with high HP.