Thread: Boards of Canada style rack.
You should look for an Intellijel Atlantis. It's inspired by and sounds like the Roland SH-101, which BOC used extensively for their basslines and melodies.
around 1 min here:
and here:
But for effects, a Mimeophon does nice warm delays and pseudo verb, I'd recommend a Mutable rings to run audio into. I've created some really BOC-esque sounds by running drums into it and modulating the pitch/shape. Mutable's Clouds is no longer made, but I'd say get that or one of the newer clones like a Monsoon for granular processing/pitch shifting/general chaos.