Mrs Williams told the newspaper that they would make a "memory box" for the girls and possibly a bench with their names for the garden in their new home.
It will act like a memorybox, with a sealed section inside where the victims' relatives will be invited to put an object that reminds them of their loved one.
The site has teamed up with the Press Association and the British Library to allow users to attach old material - including newspaper clippings - to their own "memory box".
Memory specs on the box show 1GB DDR2 and 32GB of built-in storage -- 26GB of which is available to the user -- and an additional 25GB free for two years through DropBox.
If you're absolutely certain you're going to run only text-based word processors or spreadsheets on an IBM-compatible, or simple word processors and spreadsheets on a Mac, you can settle for a basic box with one megabyte of memory and a 40-megabyte hard drive.
Likewise, the company's FlashTrax looks just like an audiocassette: Stick in a multimedia card or memory stick, and you can play digital music on a car stereo or boom box.
All three of Pioneer's new players come complete with either on-board memory or flash drive for expandable memory to ensure consumers can take advantage of BD-Live right out of the box.