Why would she find it creepy? 3.) is completely based off of a suggestion given by a poster here (leave the gift at her door with a tag on it), and 4.) is just being in the same place to observe how she reacts.
Did you listen to that podcast I linked to? It touches on things like this a bit.
Certain behaviours are appropriate in one type of relalationship but not in others (BTW - by "relationship", I'm talking about interpersonal interactions in general, not just romantic relationships).
Giving of personal gifts (i.e. directly from one person to another as opposed to other types of gifts like charitable donations) is usually done in the context of a
communal relationship like either friendship or couplehood. The underlying principle of a communal relationship is basically "share and share alike" - people do nice things for their family, friends and romantic partners
because they're their family, friends and romantic partners, not because they expect to be reimbursed or get some sort of material gain from doing it. However, this behaviour is based on the relationship that already exists.
OTOH, in many social situations, the "default" when no other form of relationship is present is
reciprocity: basically "tit for tat". In this form of relationship, people do things for each other, but with the expectation of reward. For example, think of a restaurant: a waiter doesn't bring you food just to be nice to you; he does it because he expects you to pay your bill at the end of the meal.
When a girl (or anyone) gets an unexpected gift, she'll try to figure out the meaning and motive behind it. The relationship between the giver (you) and the recipient (her) will partly determine that meaning. If she doesn't know you well, she probably won't recognize a communality-type relationship between you two yet; if she thinks you gave her the gift on that basis, then she'll probably consider it inappropriate. There's also a chance that she'll see it in the context of a reciprocity relationship and assume that you want to get something from her in exchange for the gift.
Probably so. That's why I keep the vase secret until I observe a positive reaction from the flowers.
Okay, but as soon as you pull the vase out, she'll know you gave her the flowers. There's no need for deception.
Also, if you leave a bouquet of cut flowers just sitting in air without a vase, they'll die quickly.
I wish this was true, but experience has shown me that good and honest intentions don't protect one from the wrath of a female =/. Even though nothing in this plan is morally wrong, it might be necessary to hide so she won't rip me to shreds.
In that case, maybe it's better to hold off until you think there's a good chance that she
won't rip you to shreds.