It's expensive to buy frames but it's been my intention for years to frame some of my favorite cards so this year I went to Goodwill and I found lots of frames the could be reused and repurposed for this project.
I even found a story photo frame that was originally done as a decoration that I could replace with three smaller cards.
The Santa below was framed using a $10 frame from Big Lots and a Christmas card. behind the Christmas card the mat is a piece of cardstock that I wrapped with Christmas paper. you can do that was several which will keep your look consistent or you can mix it up, making it whatever you'd like.
You can also use gift bags if you found one that you really like.
This will allow you to change up your display as you get in new cards that you like and display the special ones that clients have given you.
It will help you recycle reuse and enjoy your holidays a little bit more for a lot less money!