Flower trail
Flowers spring up behind you. Walk around and see them follow you!
Try the code:
player.onTravelled(TravelMethod.Walk, function () {
blocks.place(YELLOW_FLOWER, pos(1, 0, 0))
blocks.place(OXEYE_DAISY, pos(0, 0, 0))
blocks.place(POPPY, pos(-1, 0, 0))
})