With the yo-yo dolls. Put them on a thin elastic young children love the stretchy legs and nothing can harm them.
I have seen them adorning handbags . They also make centres for flowers on wall quilts.
This is something I have thought about but never have time. Could you make one which does not fasten tight in centre but has a small section at the top. Different fabric inside. A circular hickey nut or faux cathedral window.
You could in my mind join as all different outside shapes.