You walk around town, sometimes stopping at interesting items. Of course, until that time, you must already decide what gift you wish to receive. Gradually come to the storefront, where is your desired thing. And as if casually, sighing, say you really like a selected thing and you want her to have. If you manage to make it to the store, it's generally fine.
Be directory. Choose what you like. Circle, preferably with a red marker on this thing and accidentally leave a catalogue open on the page that is needed, in the most conspicuous place. Loving the hint will always understand.
You can just tell that your thing is old, completely worn out, and you eventually will need to buy a new one. Such tricks are men, too, occasionally give in, especially if you don't know what to get you.