I have some Omlet chicken fencing which was loose at some points along the base and needed some stubby pegs to hold it down.
These are they.They're only strong enough for reasonable soft ground, I imagine, but they worked for me.
I am very much an enthusiastic amateur when it comes to designing. My designs tend to have two things in common
1) They serve a purpose. I like to design functional objects which have a real-world use. 3D printing for art is fine, but it's its real-world application which will take the technology forward
2) Wherever possible I design to be easy to print and try to eschew supports or complex printing; modifying the design where necessary and possible to achieve this.