Just to be clear, my offer to retrieve the pig in return for a trip to Australia was conditional on the pig being under the house.
:mad: How could you bring that up.
Anyway, OP, do it! I don’t understand how this isn’t driving you mad with curiosity. I feel like we all need to crowd around you, chanting
DO IT! DO IT! DO IT! DO IT! DO IT! DO IT! DO IT! DO IT!
C’mon, you’ll give some Emergency Room doctor a great story (not to mention corroborating X-ray image) to one-up the other docs with when they’re exchanging stories about strange cases!
Misery loves company! 
Jackass had a toy car.
Pulp Fiction had a men’s wristwatch.
The SDMB would have a piggy bank.
Dude, we’d be in rarefied air.
Dung Beatle- thanks for the laugh.
You other guys- wait until I get bitten by a dugite in two days time because of an empty money box.
But Iam planning this. Me and the three legged cat will wear those mining helmets with a light on top. I will have a rope tied to my ankle so my paertner can pull me out in case of a vicious cockroach attack. Presuming she isn’t laughing.
I know I will die. 
But it’s in the name of DISCOVERY!
And the entertainment of the SDMB
And potential gold dubloons! Or diamonds!
I just hope it has nothing to do with Donald Eugene Ivens.
If it is filled with Krugerands won’t you feel like a chump for waiting so long.
Less morbidly, things get forgotten. Granted, it’s not often things like a million bucks somehow crammed into a piggy bank, but people sometimes stash things and forget where they hid them. Or forget to retrieve them before leaving, and are unable or unwilling to come back for them for some reason. Of course, the piggy is probably full of nothing more than dust and lost dreams, so no one bothered to retrieve it, but you never know. It could have something interesting in it, and if nothing else, it will now have a story attached to it.
Personally, if I were inclined to elaborate mind-games–and I’m not saying I am–I would plant such an item with nothing in it but a ciphered message and perhaps a interesting-looking random object. Maybe a single ornate button. The ciphered message would contain a cryptic warning and a clue where to find the next message. A serious of message drops and tenuously related objects would lead to a final container with reddish-brown stains on it containing one last message:
“Be sure to drink your Ovaltine.”
The saddest thing would be to go to the trouble to crawl into the rat, snake, bug infested crawlspace, assaulted by icky spiderwebs and unidentified poo, only to pick up the half buried pig to find it wasn’t half buried at all, but only just half a piggy. 
Been there, done that.
Just recently…
Is it really that scary under there? When I was younger I used to go into our crawlspace all the time. Of course, I was smaller then… and not really scared of creepy crawlies and whatnot.
Take some tools in with you… Long brooms or rakes or the like. You may be able to grab it and pull it to you without crawling all the way in.
I will bet money that the piggy bank is filled up with pick piggy guts.
I sure hope it’s not… a cooler of death.
Hah! Chump change! From a Philadelphia attic…
Damn time zones - is it two days your time yet? 
You mean for instance due to the presence of numerous dugites, poisonous spiders, giant cockroaches and ancient Egyptian curses?
You’re just evil.