I think I have almost enough for the show. Perhaps a round dozen would be good number. I know they are totally impracticable but they are fun to make and they do show a different aspect of parchment crafting.
For these two I have used plain parchment that I have printed on myself (well my printer did the work). I can't remember where the first pattern came from but the second was a bought download and is a favourite diffused pattern especially when I am making flowers.
The second bag is called a 'Knitting Bag' in the design book and is quite an intricate pattern. At least it looks very intricate when you first look but like most things if you follow step by step it becomes clear and you wonder why you thought that you might not bother with that one.