The pen recycling scheme is good but I always think that recycle should be the last resort. I try to follow the “reduce, reuse, recycle” philosophy in that order. Reducing insulin is not really possible but reusing is.
As you are aware of the NovoPens you use for NovoRapid, you probably know how much better they are. They are more robust, have the reminder on the end, are available in half units, take up lessspace in the fridge (and luggage when you travel) as well as being better for the environment.
I would encourage everyone using single use insulin pens to push for the reusable type regardless of Tresiba pen shortages.
Unless you have dexterity issues, reusable pens are so so much better.
Even if you use the PenCycle boxes.