Most of my scenes are set to filter thru machines and “lock” the master delay for different timed beat-repeats with different high and lo pass filtering on the delayed audio
But I think people underrate the chorus (same idea applies to flanger and phaser) & the lofi effect’s amplitude modulation
But the real interesting thing to me, especially when synthesizing my own percussion sounds from either just sculpted noise bursts or short transients from field recordings of mine, are using the EQ along with 3 band eq or filter for support/fine tuning the frequencies. It’s the best for crafting new textures from organic sorts of samples imho
And I put a compressor on everything. If there was a 3rd fx slot, each one would have a comp, in addition to master track 8’s comp
Comb filter is also good for the Karplus strong string synthesis. I just wish the Octa has audio rate lfos or another way to fm pitch, filter freq, or am levels like you can with Digitakt samples to add extra grit and harmonics
Max Marco has some really good tips for things like this:
And if you want to do shallow water/strymon deco/generation loss style tape warble, you can try using lfos like this: