I love my 303. The FX are great and it’s such a warm, gooey FX box. I like putting samples of (cold, abrasive) digital pads and “playing” them with the 303. Another thing I enjoy doing, akin to the method above, is taking a long sample (on a smart card) and using the “mark” to loop different sections and using the start and end points to find interesting, complementary rhythms. Something about the 303s amp envelope or something avoids zero-point clipping and is always nice and punchy.