Snowman is everywhere.

config.def.h

@@ -111,6 +111,7 @@ static unsigned int defaultrcs = 257;
  * 2: Block
  * 4: Underline
  * 6: IBeam
+ * 7: Snowman
  */
 static unsigned int cursorshape = 2;
 

st.c

@@ -3863,6 +3863,8 @@ xdrawcursor(void)
 	/* draw the new one */
 	if (xw.state & WIN_FOCUSED) {
 		switch (xw.cursor) {
+		case 7: /* st extension: snowman */
+			utf8decode("☃", &g.u, UTF_SIZ);
 		case 0: /* Blinking Block */
 		case 1: /* Blinking Block (Default) */
 		case 2: /* Steady Block */