sewing machine seam guides DIY

I've tried many different types of sewing machine seam guides.

 I've tried a magnetic one 

But my machine is plastic and the metal plate isn't big enough

I tried using masking tape

But it curls up and there is no substance to it to keep the fabric straight

I've tried a foot with a built in seam guide 

But I just can't seem to get the hang of it 

I just couldn't find the one that worked for me. 

Then one day during quilt can Bonnie Hunter mentioned the technique she uses. She uses a thick piece of plastic like a hotel key card or a shop loyalty card and attaches it with these 

They are made by scotch and are easy to reposition with no damage to the surface. This pack contained 18 1x1 inch squares and I used one square cut in half for my seam guide so it's not expensive. Plus I can think of 100 other uses for the rest! 

And this plastic card that my new phone sim card came in is perfect! 

The sticky tabs make it really easy to take off the guide for things like quilting that don't need the guide and also to remove the front of my machine to access my front loading bobbin. It is thick enough that it creates a nice edge to butt your fabric up against and extends beyond the presser foot to keep fabric straight as it comes out too. I'm really pleased with it. One of the cheapest solutions but definitely one of the best!