Braid hints
The answer to the bonus question is... well, uhm, right in your face... sorry
Cut out a strip with a size which is approximately 3x8 square units (whater the specific size unit)
Fold the (longest side of the) strip in half and then in a (sort of half-) “twist” as in the photo
Fold out and fold in half to make the slits such that the slits do not extend (to much) into the side (of length approximately 1 unit)
Refold in the “twist” and start with the first easy fold...
After some more puzzling steps for you to find ... will this be the result (-: