Cuff links have their issues: they're easy to lose, they're for stuffy situations, and most of the time, you have to punch holes in your t-shirt to attach them. For links that at least let you have a little fun getting dressed up, get to Cufflink Connection
From a mighty creative Ft. Myers girl, CC takes a classy silver backing and affixes all kinds of less-classy stuff from categories like Vintage, Geekery, and Food, even though you've never needed help getting that on your shirt. That Geekery collection's got links made from the likes of X-Box controller buttons, Scrabble tiles (you can choose your letters), Lego blocks in various colors, Star Wars fun like Stormtroopers with blasters and Yoda with a light saber, and some with a Spiderman mask on them, for concealing your secret identity as a not-nerd. Other groupings include Steampunk made from the intricate gears of watches, plus the aforementioned Vintage featuring stuff like coins from Spain, and way-off-beat items like tacos, pewter sixers of beer, and a pair of little spiders that spin around, making them "really fun and great to play with when you are bored at work", although that seems to pre-suppose they've removed the Minesweeper from your computer
Because they're just that crazy, CC's even got stuff that looks kinda classy, like a simple elegant rectangle with a slate gray center, gold & black hexagons with a matching tie tack, and vintage typewriter keys from the '30s and '40s saying stuff like "back space" and "?", also your reaction when learning cufflinks went into "cuffs".