This: https://www.modulargrid.net/e/4ms-company-quad-pingable-lfo
Four LFOs in that thing, with periods ranging from 500 Hz down to a ridiculous .0002 Hz (ie: 70+ minutes). And another module in a similar timebase vein that you might find useful is: https://www.modulargrid.net/e/nonlinearcircuits-triple-sloths-v2