I have been to various weddings having different structures and shapes to the chuppah (wedding canopy). Among the more notable chuppot that I have seen are:
- a plain white cloth on wooden poles held by 4 people (like in "Fiddler on the Roof").
- Same as above, but with a tallit as the cover.
- In one place, there were no poles - just 4 people holding the tallit.
- Huge lace "veiling" on top and on the poles, making it look like a giant cloud.
- An arbor - looks like an open "succah" with vines resting overhead
- Huge flowers around Romanesque columns and leaning over the top
Are there any recommendations in halacha on the form, shape, materials, used in the chuppah and are there any halachot (a linked source will do, if a list is too long) on what may be prohibited to use for the chuppah?