Best way to go about connecting two monitors to my MacBook Pro?

I have an early 2011 MacBook Pro and I already have one external monitor hooked up to my laptop. I have a Thunderbolt to VGA adapter to make that one work. However, I've recently been given another monitor. What's the best way (that's also a reasonable price) to go about hooking up two external monitors to my laptop? Please note that both monitors only have VGA and DVI ports. What ports my laptop has and my laptop's specifications can be found here.