Best Way to....

[quitcrab]

Place the card in a bigger sized top loader and tape it behind the mat. That works great. Use a new toploader... It works great.. the card may shift over time a little, but I have had good luck with this method.

[steve B]

Originally Posted by quitcrab

Place the card in a bigger sized top loader and tape it behind the mat. That works great. Use a new toploader... It works great.. the card may shift over time a little, but I have had good luck with this method.

That can work.

What I do is to use the self adhesive "archival" clear photo corners. I use those to put the item on a mat behind the cutout mat.
You just have to be sure the frame can handle two layers of mat.

[darkhorse9]

You can also use stamp hinges. They're little pieces of folded paper with slight adhesive on them. Stamp collectors use them all the time with no risk of damaging the item.

[Jenx34]

Thanks for the ideas. Heading out to run some errands and there is a Michael's nearby. I'll let you know how it comes out.