OT: FIB Microscopy Ideas + Request for 7409

We recently had a Focused Ion Beam (FIB) microscopy system installed in our lab - which I've just started to play around with. FIBs are used now fairly widely in the semiconductor industry to modify prototype chips - you can etch or deposit metal/insulator at the 100nm scale. Check out fibics.com for some more info; no relation to me. I wondered if anyone had any neat ideas of what to do with it? Both out of interest, and for a demo for some highschool students who will be here on a Nanotechnology course. I de-capped a ceramic 7401 Quad NAND and a 7405 Hex Inverter - with the idea of modifying the functions. However, I can't think of too much to do with either - except maybe trying to separate the input transistor emitter on each hex inverter to make it function as a NAND. Unfortunately these were the only relatively simple chips I had in ceramic packages - I thought turning a 7409 AND into a 7401 equivalent NAND would be neat for the students to see - and at a scale they could easily work with/understand. Does anyone have any 7409 or 7408, or, a similar ECL, DTL, etc AND in ceramic packages they'd like to give up? Control of the system is fully automated; centered around a IBM PowerPC RS6000 43P running AIX.... T.H.x. Devon