forgive me if this sounds like a terribly stupid question.
So I know you can blanch some veggies and they will sink, but i've seen some pictures of veggies on a metal corkscrew looking thing that sinks them down to the bottom. I would much rather give them raw veggies than blanched ones, simply because blanching can remove nutrients. Where could I get something like the metal corkscrew...or anything to keep veggies at the bottom? I've never seen them at any LFS.

The metal corkscrew is a Screwcumber as far as I know they are available universally. They are usually on eBay if you really want one.

There are easier/cheaper methods of weighing food down as suggested in this Thread

^ I have these Screwcumber is an awesome product. Most people tho use the cheap way of sticking the veg into a stainless steel fork and dropping that in. Just make sure it's thoroughly clean of any chemicals

I purchased a few sets of plastic clips from aquatic store in my area. very cheap , I think under $3. for a package of 2 clips, they work great. Check your Aquarium Stores, some will ship if too far, but if you get really stuck , let me know and I will pick some up for ya if you wanna pay the shipping to TX ..

One of my aquarium stores is about 50 min drive in heavy traffic, but I prefer them to local chain pet stores ,and prefer to give them my business , so ,often I will call for what I want and they ship overnight ... I found them by mapquest... but when I want to buy fish, of course I make the drive. There is a store close to me , which I use too, but often they are low or out of stock things I want, --hit or miss ,ya know.... And I don't buy fish from them as they run one pump through all their tanks. That's why I prefer aquarium only stores .

well, try mapquest , see if there is an aquarium store in your area, or pm me and I would be willing to get you the plastic food clips. they have suction cups on them ,which can be removed if prefer. HTH.
Georgine

There is actually a great LFS near me that sells those clips, unfortunately the last once I got broke pretty fast. But i've been using the stainless steel butter knife and it's been working pretty well.