Personally, and I appreciate, that this is a personal view, I would just let it show and not worry about covering it up.
DD has a huge scar covering a third of her lower right arm, which she has for life. She just wears what she wants and doesn't bother whether the scar shows or not.
Try the clip in thingy that you fancy, as well as any other reasonably priced things, and then you'll have an idea of what works for you. Have a selection, and have a trying out session.
why not have the rest of your hair cut quite short and not worry about covering it instead wear your scar with pride. Hair grows quite quickly, or there are wide soft stretchy cotton bands which can go round heads, necks, double up as hats which my daughter used post chemo. I think sea salt do them in lots of pretty colours and designs.
Afternoon all. I've recently had an arterial biopsy above my left ear; the side of my head has been shaved and I have a long scar. Not a pretty sight. I have ear length silver fine thinning hair and I really want to hide the bald patch as it will take a while to grow back; I can't wear/won't wear a hat because my head is sensitive at the moment. I thought about trying a clip in hair thing piece a la Claire's accessories; DD says don't you dare (so I will!) Seriously, though: where should i start looking?