Michael Kenny (31) admitted taking the cylinders which were used to run a business selling gas-filled balloons through Facebook.
The canisters were found in a search of his house when gardai investigated their disappearance from a west Dublin logistics centre, where they were being stored for a party supplies company.
Kenny was spared a criminal record for the theft after he made a €1,500 donation to charity at Blanchardstown District Court.
Judge Gerard Jones struck the charges out, leaving him without convictions.
Kenny, with an address at Croftwood Park, Ballyfermot, had pleaded guilty to theft. The case was heard previously and came back before the court for a probation report, and payment of the €1,500.
Judge Jones asked to hear an outline of the evidence again.
Garda Sergeant Maria Callaghan said the accused was working as a supervisor at Masterlink Logistics, Damastown Avenue in west Dublin when he took 12 helium cylinders from his place of employment, where they were stored.
The thefts happened on various dates in 2019 and 2020, the court heard.
The cylinders were the property of a party supplies company and after the theft, they were used by another person to run a balloon business through Facebook.
The balloons were sold on to various parties through the social media platform.
When the thefts were investigated, the accused’s home address was searched and cylinders were found and returned to the victim.
Kenny had no previous convictions of any kind.
The court heard the accused cooperated fully with the gardai from the outset.
Kenny had the €1,500 in court as he did not know how to pay it, his lawyer said.
The judge said he would not “drag it out any further” and told the accused to make the payment and bring a receipt back to court.
When this was done, the judge said he was “striking the lot out.”
The charges were under Section 4 of the Theft and Fraud Offences Act.