i learned that if you have a small SD card that comes from digital cameras as 'junk addition' never throw it away...glad I didn't Had bought a digital camera some 7 years ago it was small 2GB, never used it i just keep it, lying around...thinkiing I might need it for the camera, come the android smartphone i used that instead, still didnt thtow it out(SD card) then last night i read on the on-line manual from Panasonic how to update the firmware, they used SD cards, not SDHD, or XCHD, none of the 'advanced stuff' I looked about, holy crap!, that 'junk' is the exact type i NEED to use, no need to rush out buy one...very glad...to do what i normally do "keep it never know when I might need it" (my motto) and no im not a hoarder, not even boarderline, just when it comes to unusual electronic junk, i DONT THROW it away, bit it phone charger , I keep it,,, helped a freind some 2 months ago she ran out of charge while away (from her home) I had ti somewhere in electronic junk drawer, presto! its there....
so that's what i learned...if some odd or seemingly out of date bits that Might work on something else...keep it...KEEP IT
just store it in a box or a spare drawer or tools shed in box (electronic plugs/card even card reader...