Some renter-friendly tricks for decorating Halloween walls include using removable mounting putty or low-tack painter’s tape to attach paper bats or shapes, ensuring no damage or residue on paint. Create a paper bat swarm by cutting out bat shapes in various sizes with black cardstock and arranging diagonally or circling a light. Alternatively, use washi tape to create simple spider web patterns that peel off easily. Avoid tacks or adhesives needing nails or screws. Removable decals or vinyl stickers designed for renters are also options. These techniques allow striking, stylish Halloween wall scenes that peel off cleanly on November 1, preserving your security deposit while maximizing festive impact.