I designed this on Tinkercad (you can modify) and printed in NinjaFlex. Not sure how it will work out in other filaments but if you try let me know.

Turns out my original Modern Mistletoe is really holly. More information:http://www.botanicalaccuracy.com/2014/12/kissing-under-mistletoe-or-is-it-holly.html

I added the connector to keep the leaves and berries spaced properly when hanging. The leaves go in the outside holes and the 3 berries go through the same center hole. If you use a harder filament you could probably push into a small piece of Styrofoam for the spacers instead of using the connector.

I printed another one in SemiFlex - not much difference except it fits better in the connector.

Happy Holidays - hope you get lucky under the mistletoe!