I've raised £500 to My autistic nephew lost almost his prized computer in a fire, desperate to help him replace it as so much lost

No idea where to turn anymore, gofundme when nowhere, don't know what to do. My autistic nephew lost almost all his stuff in a fire and has only managed to recover maybe a third the value on insurance. My brother cant replace it because hes a deadbeat and all I want to do is help but I'm so broke til the end of the month, I just want the meltdowns and upset to stop so I resorted to the internet, tragic I know but I'm exhausted and just want to make my nephew smile again. Not even sure if I can post the link here but if anyone wanted to help out id be genuinely emotional with gratitude