Ездить в Тулу со своим самоваром (yézdit’ v Túlu so svoim samovárom).

Literally: to go to Tula with your own samovar*.

English equivalents:

* ‘Samovar’ itself can be literally translated as ‘self-boiler’.

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P.S. As samovar is part of Western mythology about Russia – klyukvification – I recommend reading my posts on Russian stereotypes in the West (especially №2).