Heartbroken dad Andrew McGinley has released a short movie his sons had been working on before their deaths.
Conor (9), Darragh (7) and three-year-old Carla McGinley were found dead at an address in Parsons Court, Dublin, on January 24.
Their mother, Deirdre Morley, has been charged with their murders, but has been too unwell to attend court.
In recent weeks, Mr McGinley has been keeping the memory of his children alive by posting videos of them on YouTube.
In his latest upload, he shared a video of Conor and Darragh experimenting with the camera and using film techniques with Lego.
"Before they filmed their movie with Lego, Conor and Darragh had to learn to use the camera, and I bring you their pilot which features Patrick from Sponge Bob working in a Pizza Place," he tweeted.
"If you have an old camcorder or phone, getting the kids to make home movies will occupy plenty of their time.
"This pilot was the rehearsal for their movie with Lego, and then we didn't see them for a whole week while they filmed."
Mr McGinley received nearly 1,000 letters after he revealed he was struggling with being isolated during the coronavirus lockdown.
"If you want something to do, or to give your kids something to do, then I'd be delighted to get cards or letters about anything," he said.
"I'm struggling with isolation like you all, but really missing the company. I was also enjoying most of the letters that I received, so I have a request.
"Can you write to me? If you feel like using one of your An Post postcards, great. Letters welcome."
He has since posted a photo of two containers full of letters and postcards that he received.
He even won €10 on a scratch card that one woman sent him.
"I'm humbled by the letters I have received from hospital and medical staff who thought to write. The delay in posting was caused by me trying to read the doctors' writing," he joked.