as for interior trim tools [especially for the plastic pieces in the new stuff] , i have found that the more of those i have, it seems i need a different one than those in my collection, every time i need to work on something different.
i have reverted to scouring the house and the "boss's" utensil drawers quite frequently, then using tape of all kinds on whatever device i find that will do the job needed at the time.
afterwards, i get to usually keep it because she wants a new one, 'cause i "ruined" her best one !