If you applied to all the firms in NALP, I'd say that's pretty exhaustive.  You can try your school career center and lawmatch, i've seen some internships out on monster.

You can always turn to gov or public interest and get some experience there.  I got sucky grades and go to a third tier toilet and still got hired as a law clerk in a gov department.   

Volunteer at the DA or PD's office. 

I don't think transferring will solve your problem but here's my take on what I would suggest you do.  Finish out this semester and apply to transfer.  Don't take any summer courses.

(Now school is much different than work.  I'm one that hates school and never did well in it, but excel in a working environment. Maybe that's how you are regarding law school).

Now, over the summer, volunteer at a law firm or public interest or whatever specialization within law you are interested in or think you are interested in.  I suggest volunteering so you can get a feel of several different places, so for example, maybe volunteer at the DA's office for 2 days, 1 day at the PD's office, and maybe 2 days at a private firm.  Or split up in another way, 1 month at the DA's office, 1 month at the PD's office, and maybe one month at a private firm. 

If now you decide you don't like the working environment, that's a different story.  I think you need to do some soul searching and figure out what you want to do in life.

I would then take a leave of absence from school.  Not quit, but take a personal leave so you can come back in a year if you decide you made a mistake in quitting school.

During that year, I would do some research, whether that's to pursue a masters in something you like, business school, medical school, whatever. 

Whatever you decide, remember it's not really about the $.  Do what you want to do, and the money will follow.  If you do something just for the dollars and you are unhappy, it's just not worth it in my opinion.

That's my 2 cents. 

Good luck in whatever path you take.

some people have too much time on their hands.

Why be anonymous?  If you really are a dean, you lose credibility when you do this and say you are one.  It's like saying you are a professional runner or famous coach on a running forum without listing any credentials to verify.