The one in the middle looks like a fantasy piece or token depicting Queen Victoria, most likely manufactured in the first half of the 20th century.
The peacock coin is a Burmese issue from the 19th century, if it's 31mm in diameter it's a Rupee.
The 5 cents has most likely been gilded in the past and would not have been done at the mint. Most likely done as a school experiment or for novelty/souvenir purposes.
We look forward to seeing more!