If you do this, i would advise using at least a 3-liter, planting early, watering A LOT, and mulching, planting a small herb, or otherwise covering the open end.
When I made mine, i killed a couple of plants trying to thread them through the opening. They need to be large enough for the leaves and stems to reach up and out to get light, but if they are too large it is difficult to thread through bottle opening.
Also, a 2-liter container doesn't really hold enough soil to keep the plant in good water, unless you water 2 or 3 times a day. Tomatos need a LOT of water. Mine didn't get enough, so I only got about 5 fruits off of each plant. Mine turned very "leggy" and bare. It also evaporates out the open end, so find some way to cover this.
This year I'm going to try tomato plants in containers, but i am sticking with regular pots and stakes. I ordered some container "super bush" tomato seeds from Renee's Garden.
You also might want to check out yougrowgirl.com - they have a forum on container gardening which might have some tips on this.
For most of the picture frames i used acrylic craft paint, which is about $1 a tube at the craft store. I usually use some type of sealer on the wood if it is raw (never been painted before), which saves you a few coats of paint. You can easily paint different colors on top of each other, though let it dry completely between coats. If you are using metallic paint, it is somewhat transparent and difficult to coat all the way through. I usually do one coat of regular paint in the same color and topcoat with metallic paint. when you are finished, seal with at elast one coat of polyurethane. Let me know if there is anything else i can help you with.
The clock was a gift from one of my professors. I have seen them at Mark and Larry's Stuff: www.mark-larry-stuff.com The bad thing is that, in addition to the numbers being mixed up, it runs about 3 minutes slow each month, so now it's way off!!!!
in a store once somewhere in the Texas Hill Country, they had a bathtub in the middle of the store. Inside was this lifesize mermaid doll - she was so cool - and all these glass ornaments in various shades of blue. They had some hanging ornaments to look like bubbles that were floating away, and i think they had some sparkly fish dolls. It was really cool, that would be fun to have in your room.
i've done this before. I find that it comes out better if you only put on enough paint for one stamp, then wipe off and reapply. it takes longer, but your stamps will come out more even. Also, if you are doing anything at other than chest high, sit down or get a ladder so that you can push it straight at the wall, otherwise you risk inadvertently smearing your design.
In my kitchen I put some stamps where i was attaching hooks to the walls, this made it a little nicer since my hooks were plain.
i hosted a dinner for some new Teach For America teachers last week. Not having a complete set of glassware, i used old salsa jars we had lying around and etched their names into them, with "TFA 05" on the back. Presto! Cute glassware for the dinner and a party favor!
oh and it LIES when it says 5 minutes - my ass! Leave it on for 20.