Insuring packages with USPS

Insuring packages with USPS

I'm moving in the next few months and I wanted to ship some of my books and stuff to my mom so she can keep them for me until I settle down (if that ever happens). I'm going to insure the package before I send it, but my question is this: If the package is lost how will I fill out the claims form if I don't have receipts for any of my stuff? I tried looking this up on the USPS website but I couldn't find the answer. Have any of you gone through something like this? What winded up happening?
Updated Look

Updated Look

I SHOULD know what this is.. but I don’t

I SHOULD know what this is.. but I don’t

Tree id please?

Tree id please?

Mystery flowering shrubbery…ID help requested…

Mystery flowering shrubbery…ID help requested…

Time Well Spent

Time Well Spent

2 more

2 more