Who do you give it to or where do you keep it?
It doesn’t have to be given to anyone!
My DC have individual wills from templates, as they both had an inheritance, money to each other, or cousins if they die together. DH and I as executors.
We worded them based on our solicitor-written wills. They can’t be witnessed by any beneficiaries but otherwise become legal once they are signed and witnessed (think we got our neighbour to witness them). We keep them in a wallet with our wills!
Op, you can do your own if they are straightforward- everything to each other, then children, then A N Other if you all die. Also consider the executors will be in all situations, and who would be your DC guardians if you both died.
There is a mumsnetter who does wills, someone may have a link but username was Mumblechum, from Marlow wills.