Soft Purple Pillow
Sold by Researching in Comfort. If you're as confused as I was: You need in silver quality to buy the pillow. The other "ingredients" are also greyed out, as long as you don't have all the correct ones.
The Soft Purple Pillow is a toy vendor item from Dragonflight that requires a silver-quality 
Spool of Wilderthread to purchase.
Guide awaiting review
Obtain Silver Spool of Wilderthread
Acquire a silver-quality Spool of Wilderthread. Ensure you have the correct quality; other quality tiers will not work for this purchase.
Complete Researching in Comfort
Turn in the quest Researching in Comfort before purchasing the pillow to receive a free copy as a quest reward.
Purchase from Vendor
Visit the vendor and purchase the Soft Purple Pillow using your silver-quality Spool of Wilderthread.
