My dark period ended when I found parts for M-Tron 6877: Vector Detector in my childhood collection. 7 years and around 275 sets later I may have gone off the deep end.
LEGO Space: Vector Detector (6877) for sale online | eBay
LEGO 6877 - Rare Classic - with Box & Instructions. 100% Complete. M:Tron Vector Detector - Retro Toy Club