Here's an idea:
Use your Cooking Guild points to get the Wind Crystal that signs items (I forget what it's called). Now, do the
Fit for a Prince quest to obtain a Rare/Ex
Castor's Ring.
Now, the neat thing about this Ring is that by using a Wind Crystal on the ring, you remove the Rare/Ex modifiers and give the ring to anyone you want. By using the crystal from the guild, you can also sign this ring, and give it to your special someone. I have basically 0 crafting skill in all crafts, and I have been able to synth this ring with a Wind Crystal several times with no failures, so I'm pretty sure this is a guaranteed synth, with a 0 skill cap.
Signed chocolates would be nice. But what girl wouldn't want an engraved ring?