This video shows you how to combine suitably sized chess pieces and boards that fit well together, are not too crowded or too sparse. The basic idea is that the base of the chess pieces should be around 78% of the square size
The 78% guideline works well for Staunton style sets. Decorative or non-standard sets are much more subjective to aesthetics.
Products shown in the video
https://www.chesshouse.com/Official_Rules_Chess_Ed_p/724008.htm
https://www.chesshouse.com/3_3_4_Quality_Club_Special_Chess_Pieces_p/e104b.htm
https://www.chesshouse.com/3_3_4_Executive_Staunton_II_Chess_Pieces_p/e154b.htm
https://www.chesshouse.com/4_Tournament_Staunton_Chess_Pieces_weighted_p/e304h.htm
https://www.chesshouse.com/3_75in_Championship_Series_Chess_Pieces_p/js-0002.htm
https://www.chesshouse.com/4_Grandmaster_Series_Pieces_Rosewood_p/js-0001rw.htm
https://www.chesshouse.com/21_Hardwood_Player_Chessboard_JLP_USA_p/jlppl200wlmp.htm
https://www.chesshouse.com/Raised_Edge_Style_21in_Hardwood_Player_Chessboard_p/jlp225wmre.htm
