Titanium Dioxide (we can steal from make up... if there's any make up around)
2 binding clips
Rubbing alcohol
Pencil graphite
Cotton swabs
Alligator clips would be nice (probably could just make one)
Aluminum, with no holes
Spoons
De-mineralized water
A bunch of raspberries or blueberries
Iodide
And a cooktop...
I think we have all or most of these things. The problem is, that makes one cell, and we need to make quite a few to make any real solar panels work. But we could create a small solar panel for small things, like heating or what have you.
As for seismograph, a computer, a few magnets, and a pendulum of sorts and we could probably get a pretty decent one up and going.