How to get good Lightmaps in this scenario

Hi there. I’m creating a haunted house environment but there are some issues when baking the lighting. I understand the importance of lightmaps and how they affect all the shadows but I can’t get a way to lightmap certain meshes, such as the stairway columns. I thought about making a good lightmao for one of them and just duplicate it but that will mean like 50 separate meshes and they were kinda hard to position in a smooth way. Any suggestions on how to get good lightmaps in this situations?

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