There are many things that we would like to keep forever when it comes to memories. Keeping your children's handmade cards, presents, or everyday art projects that they made is very important. Storage space begins to become very limited as the get older and as more projects are done.
There are many different options when it comes to digitizing your memories. You could always just take a picture and send it to an online drive and sort them into folders. Or, you can use one of the many online tools to create keepsakes such as coffee mugs, shirts, calendars, or even actual postage stamps to use on your kids thank you notes. There are also services like Evernote that allow you to catalog anything in your life, including taking pictures, and putting them into folders and giving them special tags.
There is certainly nothing like keeping a hard copy of your kid's keepsakes. The problem is finding room for everything.