Oooh, I forgot, it's better than a 5k CD because 3.1k of that is a permanent reusable investment, so after the first time you're only putting in 1.9k food points every time!
And really, digging every day with them should speed that up considerably. Especially if you put all the points in some other element and always dig in that different element.
(I have been doing an experiment with that with an Air knuffel I named Storm who has put ALL her skill points into "light" and always digs there. Whenever she finds something -besides the keys- she gets a very very very nice chunk of xp, and every level she's got she's getting more and more of those...)
Not even counting the value of whatever materials you find. You could probably count on getting it done in 45 or 50 days, not 60. Plus if they stack with daycares....
I've gotten a fair few daycare coupons as random-reward moving around the forums. If you actually stack daycare on top of this....
Aggggh, it's SO. TEMPTING.
PLUS if you can get hold of a lava lamp? Then, as a BASE RATE
not even counting digging it takes a little under 20 days! That's it! And you can do it again after that!!
Okay that's it.
I simply *must* get my hands on a lava lamp. And I'm getting another apple-cupcake set...
Also, I'm going to make apple cupcakes.

Thanks, Nankuii. It's way too late at night to be baking. :P