What's a one or two word phrase that conveys the meaning "These are some things that I did when I was younger."? The context is a blog that features Writings, Photography, and Artwork. The short phrase will be used as a possible category of the blog's posts.
Childish scribblings may be what you're looking for though it is a touch negative.
Youthful endeavours could serve too
and failing that
early works though depending on the quality of the earlier work it might make you sound like you take yourself a touch too seriously.
I note that others have taken "younger" to mean "teenage" or "childish", but I can't see anything in your question that implies either. So...
From the vault
Or a mixture of some of these words.