Previously I’ve shared some Turtle Art programming ideas (LINK) and student work samples (LINK). Note, these ideas are shared under the creative commons licence; share and share alike for non-profit. This makes sense, since Turtle Art software can be downloaded for free, so no profit should be made personally.
You can download a word document with task ideas for students below. Note these are very basic activities, once students have an understanding of writing code they can then progress to harder activities.