I'm loving that people start showing 1/72 armies in here!
My first love as far as wargaming goes was Airfix naps - I actually wrote up my own (not very good) rules from scratch from about the age og 14 or so (ended up ditching them and adapting Warmaster instead).
Wonderful collection of celts!
What rules du you use? Impetus or the likes? DBM? Warmaster Ancients, even?
I am begining to feel like getting my plastics out again, any day soon (fall/winter may be a good opportunity) - I have had a 1/72 caesarian legion in about 1/8 ready for priming for years (in some drawer), and several unopened boxes of celts in a cardbox elsewhere.