Ah primary homework! My own personal bugbear these days!
My view is that any homework should be at the child's level so that they can complete it independently. Yes the parents might need to read the instructions, make sure there are pencils, a space at the table to work at etc, but the actual work should be at the child's level.
Except my children bring home things they can't read, claim to have never done at school, totally don't understand etc. So I help them with it and always write a comment saying they needed a lot of help, but the work level never changes. I think teachers, who are all reasonably intelligent and probably never struggled at primary school, often don't realise that while a 'top of the class' child might be able to answer 20 questions in full sentences in about 10 minutes flat it will take my 8 year old with minor SEN (who always has a TA with his group for literacy) about 2 hours.
But, back to the point. You might be surprised by who they give prizes to. Back when I was a teenager and my mum was a class teacher the juniors always had a termly project for each class. Each child had to do a 'project' about whatever the topic was. So Vikings or Victorians or whatever. No tasks, they just did what they wanted. So they might focus on the Royal family at the time, a page about food, about entertainment, whatever. They could draw pictures or print things off. Stick in photos of trips their parents took them to etc. Whatever they and their parents wanted to do.
I liked it when my mum brought these home because I would help her choose who to give 'prizes' (mainly House Points) to. We always chose projects that were clearly done by the children (obviously with a bit of help with organisation and structure etc) and not by the parents. This was when not everyone had computers but when projects came in typed with perfect grammar and spelling and vocabulary that was clearly by an adult we didn't give those ones prizes. If we did give them to typed ones it was only if it was clear a child had typed them. Ie. The sentences were ones a child would think of.
Generally though we liked the handwritten ones where you could see the effort the child had put in. And my mum knew her kids well. She knew that a project with 3 sentences per page in less than perfect handwriting was actually a really good effort for a certain child. She appreciated the hand drawn pictures and the carefully underlined titles. She always made sure she awarded prizes depending on effort, and so if there were 3 prizes they would generally go to one 'top of the class' child who had written reams and reams and really got into it, one to an 'average' child who had put in quite a bit of work and one to a 'bottom of the class' child whose few sentences and drawings had been an absolutely massive effort for them. Everybody worked hard for my mum's projects because they knew they always had a chance to 'win' no matter their ability.