Wood design for my dad

I am going to design and manufacture a Toolbox for my dad and I'm making this because my dads old toolbox 

is slowly breaking apart soI’mm going to make him a new one the purpose will hold all his tools like screwdrivers

screws hammers and stuff like that think dad will put it in the laundry and then he won’t have to go out to the

shed and bring in a broken box  

The measurement I think I would want to use for making this box is a 14″ 

The specifications for this is going to have is 

• no loose parts
• both compartments and lid fits perfectly
• it has enough room to fit tools like hammer, nails, drills, screws etc.
• it doesn't take up to much room  
• easy to carry
• doesn't fall apart
• The handle is on tight and doesn't fall off