D&D 3.x 3.0 third party books

[VHawkwinter]

Like a sentient candelabra would (to invoke Lumiere again) be able to do something like burning hands X number of times per day, whereas a sentient couch could let someone rest on it to recover twice as many hit points per night, etc. It's an issue of having to effectively build a new race every time...which is only to be expected. I just want to find that someone else has already done all the work involved.

Given how much stuff is out there, I'm holding out hope that such rules already exist for 3.X/PF1/d20 Modern, and that I just haven't heard about them yet.

Option 1: You could build a the construct as a construct (using PF1 or maybe Deep Magic), and then use "LifeSpark Construct" (CR+0) from Advanced Bestiary (PF1); and then use its CR as it's ECL, PF1 style.
Option 2: Build it with Eclipse, as you probably already do.
Option 3: Build it with Upper Krust's Challenging Challenge Ratings v5.