The dishes a tortoise eats and drinks from are bought once and used daily for decades, so it is worth choosing them well. For a red-foot, both food and water dishes should be shallow, broad, and heavy enough not to be flipped by a determined animal that will climb on and push against everything in the enclosure. Stability and easy entry and exit matter as much as capacity.
Food dishes work best when they are wide, low-sided, and easy to clean, since a tortoise tends to walk through its food as much as eat from it. A flat slab, a large shallow saucer, or a low feeding tray keeps food off the substrate, makes portions visible, and is simple to wipe down or run through a wash. Smooth, non-porous materials resist staining and bacterial buildup better than rough or absorbent ones.
Water dishes for this species do double duty as drinking and soaking spots, so they should be large and shallow with sides low enough for the tortoise to climb in and out unaided. The critical safety point is that the animal must never be able to tip into water it cannot easily escape, which means low sides and a depth no greater than the gap under the lifted shell for an adult. Juveniles need correspondingly shallower water.
Because both dishes are cleaned constantly, prioritize products that come apart easily, have no hard-to-reach crevices, and tolerate frequent washing. Having a spare set lets you swap a clean dish in while the other is being sanitized, which keeps the routine from slipping on busy days.