I've found that the wedding section of craft stores has turned out to be quite useful. For example, the tops of my socks here are wedding garters that I attached to the socks!
But anyway, as I was browsing around in Michael's today, I found a VERY cute mini parasol for $9.99. Since it's in the wedding section, it's only in white. But if you're in a financial fix and you need a quick accessory for a sweet lolita outfit, this is probably a good idea for you! I can't find any photos of the parasol on the Michael's website, but it's all lace, and it looks most similar to this, but without the garish handle. And it's mini, so when opened, it's about 2 feet in diameter? Kind of like this. Anyway, if there's a Michael's near you, it's worth checking out.
I really wanted to get one, but I'm so broke that I can't even afford a $10 parasol xD how lame is that!
I hope this helped you out!