At the Centre for Bible Engagement, we have in our small collection a number of replicas of oil lamps dated from the 1st century to the 5th century, with the latter period depicting clear Christian symbols such as a cross and christogram in the form of "Chi-Rho" after Christianity was declared as recognised religion in the Roman Empire, as seen in the photographs below. This is one example where Christianity deeply influenced the way of life and daily practices of the Christ-followers.
All the replicas were acquired during our biblical study tours or personal trips. I would like to acknowledge the gift of the oil lamp replica with the symbol of the cross by one of the pilgrims in our study tour to Greece in May 2017.