Aging props is half the battle when making your props fit into the scenery.

This page discusses weathering to fit a medieval setting from melty candles to fraying: https://www.premiumbeat.com/blog/create-medieval-fantasy-props/

This page shows how to age paper, add rust, and give your props a story of how it was used: https://www.premiumbeat.com/blog/how-to-weather-and-age-props/

This video goes over weathering through dry brushing techniques: https://www.punishedprops.com/2018/02/19/dry_brush_weathering/