Firstly, sorry if this has been done recently, I did a quick search but am no good at searching. If it has just roll your eyes and give me the link.
We have a fortnightly paper collection and also put cardboard out (I know in some areas you can't put out cardboard). There are a few grey areas imo. Do you all rip out the windows in window envelopes for example? I didn't used to, but do now after reading that you should.
I also rip off envelope flaps (is the glue bit ok? - I am not sure so don't risk it). With wrapping paper if it is a large parcel I try and reuse it. If a smaller amount I presume that the sellotape can't go in the recycling so I bin it. (although genuine branded sellotape is apparently biodegradable so possibly ok?) Am I too finicky?