Primary school - playing a game on the BBC Micro (black and orange keys ftw) with some cartoon dog running along a beach
Later primary school - getting an afternoon on the Acorn Archimedes to do a WWII project on Pendown (remember that?) and saving the files in the system folder so no-one would find em!
Secondary school - when getting information online meant passing around (read fighting) for the Encarta 95 CD which scratched to hell, amazed it worked
6th form - paying 25 quid for a 64MB USB stick and thinking the future had arrived when mass storage previously meant carrying around a box of floppy disks
Nothing beats RISC OS even to this day :D
If anyone has one of these in a cupboard me want lol...