Ahead of the game on Sunday, fans of either team are being called on to tweet either #ChelseaAtWembley or #SpursAtWembley, with the most tweets resulting in the famous Wembley arches being lit up in the colour of the team.
The challenge kicked off today and will run until Saturday night, at which point the winning teams colour will be revealed.
Fans are also being asked to submit motivational messages to players on The Football League Facebook page, with the best messages being displayed in the tunnel as the players go onto the pitch.
During the game the focus will be on encouraging people there to take selfies, with the best being selected and broadcast on the big screens at the stadium.
Drew Barrand, marketing director at The Football League, said, "The Football League is always looking at innovative ways to bring fans closer to the action and this vote really does allow fans to play a visible part in the build up to the Final."