I want to talk about one of the loves of my life and that is the 'unipin' fineline water and fade proof pen. I have been using them for years. They dry immediately so you can keep that creative flow going. I wouldn't spill a glass of water on them immediately but you can the next day. I accidentally left a bookmark that I had made many years ago outside and didn't discover it till the next morning after a night of heavy rain and it was perfect. Here are some illustrations I have done with them.