You can look on Rockauto. They have the stock bulb listed then an led option for most of the interior lights. I changed the front dome light with an led which made a huge difference. Will do all the others eventually.
From my understanding, Pfran is no more. That's what I read when searching about led's before, but correct me if I'm wrong. The amazon link above I posted are the exact same as the Pfran led's I have, but are $12.99 for 4x instead of the $40+ I paid for mine a few years ago. The other led's I posted are just as bright, but are a singular bulb and aren't polarity specific, so you can install them either way and they just work.
I've been running these since 2017 with no failures. They're bright and with the 3M backing, you can stick them to the housing. That spaces them away from the lens, giving you a bit of diffusion and making it less obvious that it's a grid of LEDs.
There's a fair amount of variance in light color. A few of them are a bit greenish, so I swapped them out. Overall, they're very bright and white compared to halogen.
I've purchased a ton of warm white LED's off ebay for cheap. The 5050 LED panels in sizes from 3 x 3 to 5 x 6 all work very well. Most come with the festoon adapters. I've replaced my map light, 1st row dome light, 2nd row dome light, and all four puddle lights on the doors for probably $20 and still have a bunch of LED's left over. I've installed an OEM dome light on the rear tailgate beside the handle and installed a large bright LED panel there as well. My HVAC bulbs were replaced with incandescent because I couldn't find the exact same spec in LED. I purchased 30 incandescent T4 bulbs and they work great.
The extra LED's you have left over could be used on other vehicles or just given to friends.