Fidget Spinner
This is quite easy print, but you need to have good bed adhesion. In order for the spinner to spin much longer it is necessary to weigh down its arms. I used 4 washers for M5 bolts into each arms cavity. Just pause the print at 7,5 mm height and insert it.
Print it with 4 walls, 15% adaptive cubic infill and no supports. I use 0,3 mm layer height but you can go lower.
https://www.**********.com/model/1246629-ab2-fidget-spinner-that-mounts-on-board