well son of a gun. may be harder than we thought. Some will will need to step up and make some nice molded pieces. I'm thinking Wit's End might be a good candidate lol
I have also ordered from www.partsouq.com. They are from the UAE. They ship via DHL express and price is very inexpensive and all OEM dealer items. I've had good sucess everytime i ordered. They unfortunately do not have that particular part...
It is a discontinued part by Toyota.
Part # is Lexus Part No.:75435-60020
ORNAMENT, BACK DOOR
I called and they said they have it available. But this will be a limited time. Grab it while they still have some.
https://www.lexuspartsnow.com/parts/lexus-ornament-back-door~75435-60020.html...
The ones i received from this seller were not very good quality, just an fyi. Just think piece of squared off plexi with bad paint. If you r looking for a super inexpensive solution then maybe thats your fix.
An OE one can be found here...