Referees whistle cufflinks that really work: Yes of course they hold his cuffs together but they also function as a whistle too, although we cannot discover any sport where the referee's shirt needs cufflinks, apart from snooker, and snooker doesn't involve a referee's whistle.
So whatever his sporting inclinations buy him these rhodium plated highly reflective finish refs whistle cufflinks and he will be able to call time anywhere.
Complete with attractive presentation and storage box. Perfect for a birthday or Christmas present, fathers day.