In 1921 Boris Kustodiev painted two young men, Nikolai Semenov and Petr Kapitsa, who could not pay with money and so gave Kustodiev a cock and two bags of flour. After many years, they were awarded the 1956 Nobel prize in Chemistry. (https://in.rbth.com/multimedia/pictures/2016/06/14/paintings-of-famous-men-10-reasons-to-give-russian-art-a-closer-look_602865)