Here's something you can try:
Just get some fish fillets and put them in the basket. Brush them, trust me on this, with Miracle Whip, and grill it. It's pretty darned good. I learned the Miracle Whip trick from a guy I really doubted until I tried it myself. It adds a little flavor, and it puts a bit of fat on the fish to keep it from sticking, and it's got enough sugar in it to give the fish a nice browning.
While you're thinking I'm totally nuts, try halving some small (5") cucumbers from the garden and brush them with salad dressing like Italian dressing. Grill them in the basket. It's surprisingly good.
Another thing I like to grill with is steel kebab skewers. Red onion wedges, zucchini, bell pepper and other compatible vegies on one skewer. halved baby red potatoes on another skewer (because they cook at a different rate than the other vegies). Brush with my favorite convenience marinade, Kraft Greek Vinnaigrette salad dressing, and grill it. Goes great with venison marinated in the same stuff. Yum.