Prepping all natural pots for permanent homes for some lucky orchid

[Matorchid]

Hello all,
I have these three Treefern pots and one cork tube. I'm trying to get in the more natural way of potting my orchids. I was wondering on how to prep them to accept an orchid, and other live epiphytes. I will try to give a brief description of what I had in mind for each one. There are pictures on the bottom.
Ok on this one wanted to mount an orchid and maybe put one inside with a tilldansia or something.
Oh and don't be fooled this is a reptile tube, how would I prep it, it is not bleached.

My apologies for extra posts couldnt figure out how to resize them, was in a hurry then.