Each of them symbolise something about him
The only one I discern is his Jewish origin represented by that Jeiwsh candle holder. The rest is too difficult or too obscure. There is a bottle in the right bottom corner but I am not sure what it means. In times of WW2, he worked as a mechanic which might be rendered by that machinery on the left.
I think two more things about Lem could be suggested by such a mural - that he studied medicine and was born in Lvov.







