I used a fishing net for my Happy Birthday Display (Ocean Theme). All that is missing are my students' photos! This also acts as a name word wall. If you want to use a fishing net for a display, I spent 1 1/2 hours on this and I have some tips.
1. It takes time to make the net look just right. I used white "easy up clips" that have a clip and wax on them to put the net up and bunch pieces of it together. Then when the entire display was finished I hot glued the top. Use a clothespin to place the items where you want them before you use the paper clips
3. Attach the paper clip though one of the net holes, then slip the loop through one side of the paper clip.
I used a real fishing net from my dad's shed (he never used it, no smell). I was able to cut it in half and will use the other half for another display. Dollar Tree has them in brown and I think they will be easier to work with.