Sicklekind

Sicklekind is Karkat Vantas' Strife Specibus. Sickles have a small handle, with a medium sized curved blade. Apparently, the Thresh Prince of Bel-Air carries around a sickle with him. Threshing is the act of cutting down grains, and the sickle was created for that use. So the thresh prince is either a farmer, or more likely it is a metaphor for thinning the ranks of the blueblood with a sickle.

Sickle
Karkat likes to think he looks really really cool practicing in his room with it, but actually he looks kind of a doofus. The most lethal members of Troll society, the threshecutioners, (of which Karkat is an aspiring member) are also known to use sickles. Troll Will Smith plays a new cadet amongst their ranks in The Thresh Prince of Bel-Air; sassin' up all the bluebloods in his flaysquad. (the threshcutioners are said to be greenblooded)

Homes Smell Ya Later
Karkat combined his sickle with The Thresh Prince of Bel-Air DVD to produce Homes Smell Ya Later. An item HS 3960 (crafted) by Karkat Vantas upon entering the medium. He likely created it by alchemizing his sickle and his The Thresh Prince of Bel-Air DVD. The name is a direct reference to a line in the Fresh Prince of Bel-Air theme, which is actually "Yo holmes, smell ya' later!"

Regisickle
It would seem that HS 004213 (later), Karkat also combined his sickle with a Regisword, producing some sort of Regisickle.

Crab Sickle
This third sickle, resembling a large red crab's claw, later joins Karkat's arsenal as he travels across his land with Jack and Terezi.