No doubt it was about unfair trade, exploitation etc. which would put me off too but try explaining that to small children. Does anyone actually take a stand and refuse to buy Easter eggs on value / environmental / ethical grounds?
I guess one way you could make your own is to shell (boom boom) out for one small easter egg and use the plastic shell as a mould. Just melt your chocolate and cover each half shell with the melted chocolate. Allow it to cool and then pour more melted chocolate over it. Repeat until it is sufficiently deep - just like making a candle.