Wait, the user mentioned "interesting," so maybe add some unexpected elements. Perhaps the elements are sentient or the guardians are not what they seem. Maybe the protagonist's choice leads to an unexpected solution, like combining the elements to create a new one.
FLOWEASYA/C COIL CLEANERCRYSTAL CLEANSANTEEN CRYSTAL DRAIN OPENERSANTEEN S-T DRAIN OPENERSANTEEN CHROME & TILESANTEEN TOILET BOWL CLEANERSANTEEN GREASE • HAIR CLOG REMOVERSANTEEN STAINLESS STEEL CLEANER & POLISHSANTEEN RTU CLEANER & DEGREASERSANTEEN NO STREAK GLASS CLEANERECOFORCE CLEANER & DEGREASERSANTEEN OVEN GRILL & FRYER CLEANERSANTEEN ALL PURPOSE CLEANER RTUSANTEEN RUST STAIN REMOVER