Think outside the square for a moment.
Usually when flowers are delivered to a loved one, someone from the flower shop will deliver them. Of course the flowers are appreciated regardless of who delivers them, but it is a great surprise for someone if the sender personally hand delivers the flowers! Imagine their face when see you standing at their door, holding a bouquet of flowers! This will allow them not only enjoy the bouquet, but also spend some time with you.
So, next time you order from an online flower shop, think about getting them delivered to you, so that you can deliver them in person!