When Olivia Allen took her four-year-old son Carter to the polling station on election day they left more than just her votes in the ballot box.
She asked her son to put her slip into the box for her and somehow his favourite Lego figure went in with it.
When she discovered what had happened she asked the presiding officer to help, but was told they were not allowed to open the box.
She had no choice but to leave her name and number with council staff and hope the toy would be found after the election.
Olivia, who is also mum to Honey, two, said: ““I had three votes to fill out so I thought it would be nice to let my two children put the papers in the box for me.
“I was voting but when I looked over to Carter his face had gone white and he was crying his eyes out because the Lego man had dropped into the box.
“He struggled to sleep without the toy and asked for him every morning and night.
“I didn’t think we were going to get it back so myself and my husband, Richard, 26, told Carter his toy had gone on a special mission.”
The story had a happy ending as after results were all declared election staff rooted through the empty ballot boxes and found Carter’s toy.
Earlier this week the four-year-old went along with his mother to the Doncaster council civic offices, Waterdale, without knowing that the figure had been found.
Staff let him peer into one of the discarded ballot boxes and discover it for himself.
His mother Olivia said: “He was so happy. He ran over to me and said ‘I love you so much’ I had to try hard not to cry. It was very emotional.”
Doncaster Council staff also gave him extra lego gifts including a Spiderman car as a present.