Tinfoil hat is my first recommendation. Shrink a dome/cone/box of wood/metal/stone and wear it as a hat. Protects you from AMFs (since they're emanations) and can be activated as a readied action from a raven familiar (though this requires Obtain Familiar if you can swing it).
I do have a familiar (Pseudodragon even). What is AMF? Sorry.
Anti
Magic
Field. Much cheaper than spending a 9th level spell to cast while inside one, yes? And you don't have to waste Contingencies and such for them, either.
In this case, you're plunged headfirst into an Antimagic Field, and the field hits the shrunken hat, suppresses the Shrink Item effect, and makes it big. AMF is an emanation effect and you're now under a big box/cone/whatever that totally blocks it, so you're not affected. Now you can teleport out.
As far as a familiar goes, have it ready the command word each round you're not using it for something else. Any time you want it to block an effect (whether from a Fireball, a barbarian's charge, or whatever), then have it say the command word as its readied standard action to block the hell out of it.
Wear multiple layers of Permanencied tinfoil hats for even more (and reusable!) fun.
Freeze a pool of acid/poison/whatever and wear it as a cloak. Now you have a nice big pool of whatever to use however you can think of.
Too bad I can only memorize the spell once per day, and it only lasts 9 days. But that sounds like a great deal of fun. If I read the description correclty you can shrink a pool of water and give it a cloth-like form, that means you can decide it should be silk, or linen? And you can also designate the color? That also means when you would be stripped naked in a dungeon, and you find some stones, you could create clothes for you (if the DM lets you and your DEX is high enough etc.)?
I assume things like color are whatever the original item was. However, you can use Prestidigitation to change colors on the fly.
But yes, I imagine you could indeed make clothes out of rocks or dead dwarves or whatever (not that there's much difference between dead dwarves and rocks, so YMMV).
Shrink a bunch of big stone blocks and then Fabricate them together. Multiplies your Fabrication capabilities by a factor of 4000.
Didn't get that. I'm not sure what you mean with fabrication.
Cagemarrow caught it on the nose. Shrink down a bunch of materials, Fabricate a scale model, then blow it up to normal size after you've placed it where you want it. So instead of 10 cu ft per level, it's now, what, 40,000 cu ft per level? That is a LOT.
Great ideas. I think it's one of the most useful spells ever
That it is. Yup. Now, how do we combine this with Explosive Runes?