Just saw these 13 cm and 26 cm filaments:
https://www.aliexpress.com/item/33037762347.html
https://www.aliexpress.com/item/4000339928790.html
They have the same rating, 6.5 lm of CRI80 2200K light at 20 mA/3V.
I wonder if they are tough enough for some exposed decorative uses….