The Moo the Merrier Sulky Thread Pack
All the thread you will need for "Hey, Diddle", "Slick Fiddle", and "Blue Velvet". This is a packet of 12 colors of Sulky 12 Weight cotton thread. Each spool is 50 yards, and a single strand is roughly equivalent to 2 plies of DMC floss and works well on 14/28 and 16/32 count Aida/linen.
These charts were part of The Moo the Merrier (TMTM) project, a collaboration between many different designers in March 2021. The TMTM projects were focused on cow themes. Many of the designers chose to draw from this same Sulky thread palette. You'll find that you're able to stitch a whole herd of cows from this same pack.
This is also a good starter palette to give Sulky a try if you haven't before.