Write_On is a campaign that tries to keep the spirit of handwritten letters alive. Last year, I was able to get one of their kits of four cards and one Gelly Roll pen. One of my other friends also joined and I received her card! It was funny, though, the campaign is in March and I didn’t get my kit last year until late April. XD
Per the official site, this is a sample of the 2016 kit. These kits go pretty quickly, so I recommend signing up now!