Pattern available here: http://milk-shed.com/2014/12/09/basic-ball-christmas-ornament-free-pattern/
scrap Bernat Roving or similar bulky yarn
5.5 mm (size 9) DPN or circular needle
Needle for weaving ends
Notes: I started my first test ornament on DPNs but find them too fiddly to work with these days. I much prefer using interchangeable needles with a long, very flexible cable. Of course, do whichever you prefer.