Was a computer programmer as a student and helped a big company produce a hugely successful ZX Spectrum game - for a laugh managed to put a pixelated cock in one of the backgrounds and it has NEVER been noticed.
Some of the candles on the chandeliers in Spellbound are definite candidates: <https://maps.speccy.cz/maps/Spellbound.png>. ISTR in the Atari 8-bit port, the green crystal was pretty phallic too.