About 1981/82, an H/H Flanger, powered by the socket in my amp, an H/H VS-Musician 100W combo. Liked the sound but didn't use it much.
When I switched to valves, about 83, I got DOD's Chorus and 6-band Graphic EQ, and a Crybaby. These were my only pedals for years. Graphic conked out and I replaced it with one of the first Guv'nors. I replaced the Chorus with a Digital Delay that could do Chorus (can't remember the name) - it was a better Chorus, but I never really used Chorus live after that.