Just noticed you can now order gift cards from Kroger online and still earn gas points. The FAQ states you will get 2X or 4X depending on what promotion is in effect the day you buy. You can also get ecerts for many of them.

https://www.giftcardmall.com/FAQ

I just did a test buy of a $15 Amazon emailed certificate 10 minutes ago. There is a field to enter your Kroger card number or alternate ID. The order is still processing so it is not instant like buying direct from Amazon. I'll update when I get the ecert and see how many points hit my Kroger account. The charge hit my Amex as giftcardmall.com, so I'm guessing no bonus categories there for anyone.

I plan on still going to the store since I combine gas points with my 6% Amex BCP, but this could be great if Kroger is not convenient, realize that you forgot to stock up the last day of a promo, or want to actually send a card as a gift that you can't get locally. I notice many restaurants on the list that are not local and carried in my area.

The do have $20-$500 Visa cards for a $3.95 fee plus $2 per shipment over $250 for mail security. Probably not useful for MS unless giftcardmall.com gets you bonus points.