Textiles
For textiles like challah covers, wash gently by hand. Line dry. If you choose to iron, do so on low heat setting.
Embroidered hats can be washed on delicate cycle and laid out to dry.
Ceramics
Ceramic pieces can be cleaned with dish soap and water. For shabbat candlesticks, I like to use a corkscrew to remove large chunks of left over wax before washing with soap and water.
Woodwork
For challah boards, you should be able to spot clean with a rag and a small amount of warm water. If you want to do a more substantial cleaning, gently scrub your board with a sponge and hot, soapy water. I recommend using a mild unscented dish soap. It’s important to wash both sides of the board (even if you chopped on only one side) to prevent it from drying unevenly, which could cause the board to warp. Rinse the board and dry it thoroughly with a clean dish towel or paper towels. Stand it upright on your counter to prevent any residual water from pooling, and let it air-dry completely before you store it.
If you want to condition your wood pieces like candle stick holders or other wood items, you can gently rub on a non-toxic food grade mineral oil with a cloth.