@thumbthrough: Mazal Tov on your recent engagment. May you and your kallah have much nachas and be zocheh to build a Bayit Neaman B’Israel.
You mention that your kallah is “kind of a tomboy”. This would lead me to believe that she enjoys (watching) sports. Perhaps tickets to her favorite sports team. I know, not “bridal” at all. But a gift is suppose to make the recipient happy. Or, you can ask your kallah what SHE would prefer. She’s getting married and old enough to make this kind of desicion.
If possible, please let us know what the outcome is. This is a most interesting scenario.