X17A mini LED mods.
All I did this past trip was swapped out the lights for LEDs. I bought the cool lights (bluish tint) and I thought the DD would not like the brightness, but she likes it. I have a set of the warmer cast lights also in case I need to swap them. Unfortunately, they came in sets of 10, and there are 11 lights to swap, so I led the bathroom lights with the originals.
I don't care as much about power usage (since we hook up), but the difference in heat in the trailer was very much appreciated! I got them from Amazon for about $25 for the set.
Tips: Use a paper towel to remove the old ones just to keep your finger oils off the bulbs. And, plugging in the new ones takes some care and strong fingernails to leverage them in just right. No problem though!