Among them, Red Lobster will give you $5 off coupon for every $25 you spend online to purchase gift cards. Click here for that offer.
Applebee's will give you a $10 bonus card, when you purchase a $50 gift card online. Click here for that offer.
And P.F. Chang's will give you a $20 bonus card when you buy a $100 gift card either online or in restaurants. Click here for that offer.
The other good thing about restaurant gift cards -- besides the bonuses they're offering you -- is that most restaurants offer an e-Gift Card option, which means if you need a last-minute gift, you can email one to that person you might've forgotten.