You could write a little message inside to someone special saying turn around and then you are proposing... thought that might be a cute idea... I don't know... haha! :)
Jan's Quick and Easy Santa Gift card holder: Oh What Fun set, Gift Card Envelope Thinlits, Square framelits, Note Tag Punch - all from Stampin' Up!
Snowmen Gift Card Holder with tutorial
Glue gold leafing onto marble printed paper for extra fancy Christmas gift wrap TUTORIAL step by step
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5 Creative Ways to Wrap Gift Cards (via Bloglovin.com )
Cajitas de regalos que nos sacan de un apuro.
Quick Gift Card Holder or Money Wallet - With Endless Wishes
A cool way to give $ or a gift card.
Make a simple gift card fun and special with this easy gift wrap | Christmas | Birthday | Present | The Little Design Corner