Something sweet....pretty sure it wouldn't work unless Bruce found a way to reverse the radiation...but follow this...
Bruce wants to surprise Clark with a very unique gift...He has the means for space exploration...he sends out an unmanned vessel to the location of Krypton and gathers a few pieces. The rocks are kept in a canister within the vessel. He brings them to a lab...is able to clean them ( b/c cartoon comic logic lol ) and he creates a crystalized flower from the rocks of Krypton.
It's a very long shot but soo sweet













