I'll keep this one short and sweet (no pun intended). So sweet trees are the new things to look out for when you go to a wedding!
They are shaped like topiary trees but are covered in your favourite sweets! If your having a chocolate fountain (another popular choice for weddings) then why not have a couple of sweet trees covered in marshmallows, ready for dipping!
So get either get online and finds local sweet tree company, or next time you go to a bridal fayre speak to someone there (they usually have a sweet tree stall).
Hope this helps!