I second the slice o' cheese suggestion.
I like raw tomatoes with salt on them. Plain, they're just blah.
If you like the taste of tomatoes, but hate the raw taste, you could use a little tomato paste spread on the bread, or a thin slice of canned tomato.
I like grilled veggies with a sundried tomato pesto as a panini with a slice of provolone, yummm. Bacon would go well on that, too, but not lettuce. The sandwich press would wilt the lettuce.
I like raw tomatoes with salt on them. Plain, they're just blah.
If you like the taste of tomatoes, but hate the raw taste, you could use a little tomato paste spread on the bread, or a thin slice of canned tomato.
I like grilled veggies with a sundried tomato pesto as a panini with a slice of provolone, yummm. Bacon would go well on that, too, but not lettuce. The sandwich press would wilt the lettuce.