I just came to Susan's Place a few days ago but have been doing a lot of reading for some time. I just came across a recipe for home made breast inserts the other day and have tried it out now with pretty happy results.  The recipe called for 3 - 4 teaspoons of sodium acrylate (SO pretended I knew what that was) It's the crystals inside the absorption area in diapers!!! I KNOW RIGHT?!?! And 500 mL of water and that was supposed to make an A/B cup.  The rest of the recipe called for putting the crystals in the inner of two unlubed condoms, pouring in the water, tying off the first, then the second, stand back and watch 'em grow. I didn't have any condoms laying around the house and was anxious to see this right now!! So I cut open 4 diapers, which I do have around the house, shook the contents of two each into gallon Ziploc bags.  I wanted bigger than an A/B so I added 750 mL (cup and a half) into each one and came back five minutes later and had two nearly half gallon masses of goo. Color me surprised!! The Ziplocs are too square, rigid, pointy and unforgiving so I dumped the goo into bathroom-size trashbags, squeezed the air out and held them under my t-shirt. They were HUGE! So I scooped out about 138 g (5 oz....I have a small measuring cup) and it brought them down to about 576 g (about 1 lb 30 oz).  I squeezed the air out again, spin-twisted the bag, tied a knot and clipped off all but about 1/4 inch of the rest of the bag. I may be close to an A anyway, but they fill out a 38C very nicely. Ultimately, I will place them in knee highs to help with color tone a little bit.  The trashbag is a little crinkly but I'm thinking the hose may help a little with that too.  Gotta figure out a way to secure them, bent over and had a wardrobe malfunction.    I wonder if the skin and fabric tape would work on the hose? Gotta play around with this a bit. Later...HUGS, Lana B.

If you place some liquid makeup in the mixture you can make fairly good flesh tone.  I did this back in the 70's when I lived in Colorado, there was a store that sold vinyl breast forms and had a recipe for this.  They worked pretty good.

I've tried using the ziploc bag method myself, it gave great shape, and I felt very much feminine, but somehow water ended up leaking and they kept slipping out. If I get the chance to try it out again, I'll try out your method
@Sarah thanks for the liquid make-up trick, I'll try that too

I have a set of smal silicon bra inserts, and hold them in place with paper surgical tape on the form, stuck to a strip of plastic tape on my chest. Sticks fairly well.
Karen.

Sorry to necropost, but a few things, as I've also recently been messing around with this:

If you're not allergic to latex, definitely go for non-lubricated condoms. (for some reason, Walgreens is apparently the only place that sells non-lubed condoms anywhere near me) after you've added the water, the weight created by the water in the tip forces it into a much more rounded shape, and you can stretch the open end to get the air out, then tie it off.

Instead of ripping diapers open, and making your desk/table look like a scene from Scarface (because mine totally did), you can also use water storing crystals, available in the garden center of, I would suppose, any store that has a garden center.

Keep a funnel just for this sort of thing. You'll need to make more eventually, and it's best not to re-use it for anything food-related.

Introduce the water into the condom in segments; the weight created by about the time you get that first cup of h2o in should make it so you can just pour the rest of it in, and to be honest, I don't think I've ever actually seen a 16-oz funnel on a store shelf to begin with. Seems like it would be fairly unwieldy. lol

Condoms are tested for structural integrity, but be careful, anyway. In "True Mythbusters Fashion™," I tried to see just how big I could make one. It got pretty ridiculous, and then it popped while I tried to see if I could successfully get a shirt over it. Having your chest vomit engorged WetLock out of your shirt and down your leg is definitely something everyone should experience for themselves, but I wouldn't wish it on anyone. Fortunately, they're called "water storing crystals," because that's exactly what they do, and I'm incredibly thankful that I wasn't sopping up nearly an entire gallon of free-flowing water out of my carpet.

That being said, if you have grabby-handed friends, you may wish to keep a ruler/bullwhip/switchblade/tazer handy.

A GGBFF and I popped an early trashbag version...lol  Oh, yeah. Great cleanup. A gallon? Going all out, eh?  hehehe  Hugs, LanaB

Quote from: Lana Elaine on April 05, 2012, 11:32:51 AM
A GGBFF and I popped an early trashbag version...lol  Oh, yeah. Great cleanup. A gallon? Going all out, eh?  hehehe  Hugs, LanaB

Like I said, True Mythbusters Fashion™. 

In fact, did you ever see the urban legends episode, where they tested the Pop Rocks and Cola myth? It was actually kinda like that.