Advanced/Beginner level project. The stitches are simple, the process gets a little more complicated when connecting them. Not super challenging though.

Scrap Buster Project. There are no yarn measurements here because I just dug through my box
of balls.

This project works up pretty quickly.
Yes, you could, theoretically, make an entire blanket out of these.

Materials
Yarn, at least 3 colors per square (This is a scrap buster project) I used Red Heart weight 4
4mm hook

Key
ch - chain
cc - color change
mc - magic circle
sk - skip
st - stitch
slst - slip stitch
sc - single crochet
inc - increase (2 scs in one st)
dec - decrease (brings 2 sts from previous row into one st in the now row)
hdc - half double crochet
dc - double crochet
F/O - fasten off