Even a skink fed largely by scattering needs a reliable water source, and often a feeding dish as well, so these are among the first accessories to get right. A water dish should be shallow and stable, sized so the animal can drink easily without risk of drowning, and heavy enough that a digging, pushing skink cannot flip it. Wide, low-profile designs resist being buried in substrate and are simpler to keep clean.
Feeding dishes serve a different purpose. A smooth-sided dish keeps live feeders from escaping into the substrate and helps contain supplement powder, which makes dusting more effective and reduces waste. Some keepers prefer to offer plant matter on a shallow dish to keep it off the substrate where it would foul more quickly.
Whatever you choose, ease of sanitation is the quality that matters most over time. Non-porous materials that tolerate frequent washing prevent the bacterial buildup that porous decor invites. Position dishes thoughtfully — away from directly under the basking lamp, where water evaporates fast and food spoils — and clean them on a regular schedule rather than waiting for visible grime.