The Dianthus and Dasies are very natural looking blooms so maybe some ornamental grass or even some wild grass? I don't know if grass in your area is going to seed yet but you could even work in a few seed heads if they are available. Also what might be nice are some Fern leaves or even Coral Bell leaves and they come in some really nice colours too!
You could even wrap the miniture bouquets in larger leaves if you have some the right size.
