Propose on the Driveway or Carve a Proposal on Wood
Have someone carve out the message on the driveway. Take her for a long drive, and when you come back, she'll see the message! Take him for a carriage ride in the park. Take him along a private trail and stumble upon the tree stump that has your message. Watch the surprise look on his face with glee!
Propose Underwater or in a Hot Air Balloon
If you are both adventure freaks, how about a little out-of-the-box idea? Go scuba diving, and propose to her underwater! For something more outrageous, have the message 'I love you' inscribed on a hot air balloon, and take her for a ride. Once you are at a considerable distance from the ground, have the authorities release balloons with the message 'Will you marry me?'
Propose in the Bathtub
No proposal could be more sensual than this! Use rose petals, candles, or anything else to carve the question on the bathroom floor or wall. Have the bathtub ready with candles. When she comes home after a long day, she'll head straight to the washroom and find your message. And then all you have to do is jump into the tub (wink wink!).