how to temporarily seal a narrow gap between baseboards and laminate floor?
You said it in your question: "caulking tape". I use the brand pictured but do not specifically endorse that brand. It is like string putty, you could gently press it into place and then remove it fairly easily. It does not cure like caulk, it remains a kinda stiff putty. I used it to seal a small roof transition crack while it was raining, then easily pulled it out and properly repaired the roof when the weather cleared up.