These little orbs of sunshine are called Craspedia, but more commonly referred to as "billy balls" and less commonly known as "woollyheads." No matter what you call them, they are a radiant shade of yellow and super easy to take care of seeing as how they are usually dried.
I picked up a group of three of these babies from PigeonToeCeramics on Etsy awhile back but still hadn't been able to figure out exactly how I wanted to display them. As always, it just took a little bit of inspiration research.
I found a bunch of pictures of vases with many, many, many of them lumped together:
Picture from Salt Harbor Designs
Picture borrowed from Bespoke Uprising
While I would love to have a giant vase full of these, I don't have lots and lots and lots of Craspedia. After some digging, I did eventually find some arrangements that used 10 or less:
From a Design*Sponge article "diy project: cocktail shaker + coffee tin arrangements"
From Modern Day Floral
I really dig the one with the whisps of long, tall grass. I think that's the one for me!
All else fails, these fabric billy balls are pretty cool too!