As 1st - 31st is plastic free July it might be a good idea to add gifts that will help people become plastic free in July.
For example: make up removers, face scrubbies, shampoo bars, wax food wrap, fabric food covers, glass containers, metal straws, ceramic travel coffee cup, cloth shopping bags etc.
All of my watercolour paintings are plastic free, even my packaging is plastic free. Card, paper, tape, compostable bags. I try to be as eco friendly as possible. 
All of my work is 100% plastic free ~
but …
I will not be giving up milk or fruit juice from my diet for July or any month come to that 
and the sort I buy comes in plastic bottles.
Plastic free July for the Folksy community is more about showcasing your plastic free items to entice people to buy and highlighting that it’s a guilt free purchase as they would be helping the environment.
I have a number of items made from reclaimed slate in my shop which my OH makes, all plastic free!