Just 2 grams apiece.
Print configuration is 2+2+2+25% infill, may be printed as-is (more supports but easier to remove) or upside down (less supports but harder to remove).
CF Nylon parts need annealing (2 hours in the oven at 130C), it's better to keep supports to prevent warping.

Extremely strong layer adhesion is required so they should be printed with CF Nylon or PETG.
CF Nylon parts may survive serious bumps like flying in the tree.
PETG parts are about 0.1g heavier and considerably softer but they are still fine for accidental wall rubs and small bumps indoors.

Creality

Ender 3

Yes

Yes

0.4 + 0.2

25% octet