From the website:
If you use the cushion for pins and needles, there is a hole in the cushion to insert a thimble [as shown in above picture], if you don't want to leave that hole empty, you can fill it in with scrap yarn, and oversew the top opening. In either case, I sew the bottom hole closed as shown in the picture below.
Make several and give them as gifts...fill each cushion up with knitting or sewing notions. I use my knit one for current projects...a place to keep the doo-dads handy while I'm knitting...also a great place to store that working dpn or crochet hook when you're done knitting for the day.
I first made these pincushions in 1972, and it's fun to knit them again. I hope you enjoy knitting this project...