Make a video with demonstrations of the top ten reasons she should say yes. For example, number 7: One household means one mortgage, leaving us rolling in the dough. The image should be you rolling around in a pile of money.
Video or taped interviews with your friends (and some strangers) as to why she should say yes.
Burn a CD of romantic songs. At the end put together word clips of songs that form the proposal. For example: "will" from Will You Still Love Me Tomorrow, "you" from Just the Way You Are, "marry" from Last Night I Met the Boy I’m Going to Marry, and "me " from Lean on Me.
FedEx or overnight mail your proposal.