Create interesting delay tails by adding a dedicated delay channel instead of just adding a delay plugin as an insert or send.

To do this duplicate the dry track, add some unique processing and add a delay plugin 100% wet. You now have the dry signal and delay channel where you can get creative.

I normally like to use extreme EQ settings and distortion, for example, to get a gritty lofi delay. You can also experiment with flanges, chorus, filters etc… the options are endless.