What's the Name of That Book??? discussion

I cannot remember the title of this book as I read it 4 years ago. I believe it was about a father and son and the sons mother died of some sort of illness and for some reason cancer is engraved into my brain. I believe the son was around 9-12 years of age and for some reason they had a toolbox in the story.

Liaaaa, is this book for kids, teens or adults?

What is the story's time period and location?

Please add more of those plot details to your header/ topic title. You can copy and paste from what you've already written. Someone is more likely to recognize your book.

A Boy Called Hope, by Lara Williamson?

"I'm Dan Hope and deep inside my head I keep a list of things I want to come true. For example, I want my sister, Ninja Grace, to go to university at the North Pole and only come back once a year. I want to help Sherlock Holmes solve his most daring mystery yet. And if it could be a zombie mystery, all the more exciting. I want my dog to stop eating the planets and throwing them up on the carpet. And finally, the biggest dream of all, I want my dad to love me."