I also found some smaller aluminum spray bottles at Dollar Tree, so I might pick up a couple of those and then I'd have 2 different sizes for just about any cleaning solution I could think of!
I'm pretty sure the Dollar Tree ones are 8-10 oz:
I really should have paid more close attention when I was at DT, but I told myslef to wait until the bottles I ordered arrive to see what colors I get.
As soon as they do arrive, I'm sure I'll be mixing up a new batch of cleaning stuff (it's about time anyway) and be running off to DT to pick up some little ones.
I've also been looking over the recipes on the link I mentioned the other day. I think a good homemade laundry spray might be on my list. I'm also seriously considering making my own fabric softener. I really haven't found a laundry detergent recipe that intrigues me enough to give up Seventh Generation, but we'll see...