(Print) Use this randomly generated list as your call list when playing the game. There is no need to say the BINGO column name. Place some kind of mark (like an X, a checkmark, a dot, tally mark, etc) on each cell as you announce it, to keep track. You can also cut out each item, place them in a bag and pull words from the bag.
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Unjustified big number of Record Flows on one sObject
Nondescriptive variable names in Flow
DMLs in loop
No assertions in Tests
No Test data factory/builder
Excessive amount of System.Debug()
Excessive lack of .startTest() and .stopTest()
No flags to deactivate trigger declaratively
Gigantic Flow instead of multiple Subflows
Multiple triggers on one sObject
Only catching general catch(Exception)
Calling Queueable in loop without control mechanism or logging
Hard-coded authentication instead of using Named Credentail
Exactly 75% test coverage
Code in trigger instead of Trigger Handler
Getting IDs by loop instead of Map(records)
Hard-coding UI text instead of Custom Labels
No checking collection emptiness before DML
Method with 100s 'i++' lines for fake code coverage
