I found a bunch of boards at work that have one of each of these. I think we upgraded a system and just threw the old parts in a box. What could these be used for?
2N3053 (TO-5)
M8830 (DIP-8 )(National?) I think this may be LM88 dual remote-diode temperature sensor
2N3053 general purpose NPN Ic=700mA (http://www1.jaycar.com.au/images_uploaded/2N3053.PDF)
Uses? Take your pick! It's fairly generic. Search this forum for the part no. and you'll get some inspiration!
M8830 ???Dual Differential Line Driver??? (http://www.national.com/pf/DS/DS8830.html)
IME they're very grainy and noisy maybe due to the case style...but some folks may love 'em! I tried them in FF's and TB's