Raksha bandesh is an Indian cultural ceremony. It might be a Hindu ideology but it has nothing to do with the Sikh faith as the Sikh Gurus rejected nonsense rituals which have no practicality. There may be a photo of Guru Nanak Dev Ji accepting a rakhri from Bibi Nanaki, but this is made by someone who lacks knowledge of Gurbani, I could make a picture of Guru Nanak Dev ji drinking that does not mean Sikhs can drink. If you read Gurbani you will see that Rakhri has no place with the Sikh Religion.
Gurbani being put on Rakhris. They are made very weak and the Gurbani falls on the floor and is sometimes lost by the wearer.