Form design should focus on only asking for required information, logically ordering fields, grouping related information, reducing the number of fields, clearly labeling inputs, and using inline labels or floating labels. Navigation should be kept simple with clear wording, use of visual elements like icons and color, and consider responsiveness. Tables should have aligned headers and data, use abbreviations where appropriate, and include persistent column headers and zebra striping. Buttons should clearly label their purpose and differentiate primary from secondary actions. Loaders should use progress bars for predictable processes and spinners for unknown length processes, following the 4-second rule for spinners.