I'm a big fan of Popsicles. I wanted to make some homemade ones this years, but we don't have a way to freeze them. Instead I used some disposable bathroom cups and forks.
You mix one part yogurt, one part thawed frozen berries (whichever kind you choose!), and 1/4 part sugar. I actually added a little bit more because I'm a sweet tooth. Pop them all in a blender, blend, then freeze. I froze mine when they were still frothy so there are frozen bubbles in ours.