If you’re getting a Batumi, Batumi expert firmware has attenuators built in, so it would take care of the Batumi at least.
Your only attenuators are in Maths and Cold Mac, which is not nothing, but there can always be more 
WMD/SSF’s Quad Attenuator is cheap, passive, and functional: https://wmdevices.com/collections/wmd-ssf-eurorack-modular/products/quad-atten
There’s otherwise any number of active attenuverters. I like Mutable Instrument Shades a lot.