I have no idea when I acquired a box of 500 of No.8 envelopes so this is a stash busting exercise.
When my sister visited on the long weekend we brainstormed the options
for making cards to fit these envelopes. It measures 3 5/8 x 6
1/2 inches. They cost a lot less than A2 Invitation envelopes.
The idea I came up with was using
12x12 card stock to create three 6 1/4 X 3 3/8 inches cards. When scored at 6.25 inches you need to add an additional piece to the other side.
1. You can just add a piece of coordinating solid card stock. This gives you an element you can repeat on the accent you add to the card front.
2. When using double sided designer card stock you can leave that color show through below the shaped bottom edge.
3. You can make a landscape card which folds in the center with the solid piece being anywhere along the card front.
It requires me to stretch my brain to design for a new size because I have been making A2 (4.25x5.5 inch) cards for years.