diff --git a/src/spawn.js b/src/spawn.js
index f922c1d..aeed323 100644
--- a/src/spawn.js
+++ b/src/spawn.js
@@ -117,6 +117,32 @@
       config.ballRadius = nextRadius;
     };
 
+    const applyBallPlugin = (body, { color, shape, blobId } = {}) => {
+      body.plugin = {
+        color,
+        hasEntered: false,
+        entryCheckId: null,
+      };
+      if (shape) body.plugin.shape = shape;
+      if (blobId) body.plugin.blobId = blobId;
+    };
+
+    const getCommonBallOpts = (scene, color) => {
+      const ballPhysics = scene?.config?.ballPhysics || {};
+      return {
+        restitution: ballPhysics.restitution ?? 0.72,
+        friction: ballPhysics.friction ?? 0.01,
+        frictionAir: ballPhysics.frictionAir ?? 0.012,
+        frictionStatic: ballPhysics.frictionStatic ?? 0,
+        density: ballPhysics.density ?? 0.001,
+        render: {
+          fillStyle: color,
+          strokeStyle: "#0b1222",
+          lineWidth: 2,
+        },
+      };
+    };
+
     const createSoftBlob = (x, y, color, commonOpts) => {
       const cols = 3;
       const rows = 2;
@@ -135,14 +161,7 @@
       const blobId = `blob-${Date.now()}-${Math.random()
         .toString(16)
         .slice(2)}`;
-      soft.bodies.forEach((b) => {
-        b.plugin = {
-          color,
-          hasEntered: false,
-          entryCheckId: null,
-          blobId,
-        };
-      });
+      soft.bodies.forEach((b) => applyBallPlugin(b, { color, blobId }));
       soft.constraints.forEach((c) => {
         c.plugin = { blobId, blobConstraint: true };
         c.render = c.render || {};
@@ -164,12 +183,7 @@
         });
       }
       const body = Bodies.fromVertices(x, y, [points], commonOpts, true);
-      body.plugin = {
-        color,
-        hasEntered: false,
-        entryCheckId: null,
-        shape: "jagged",
-      };
+      applyBallPlugin(body, { color, shape: "jagged" });
       return { bodies: [body], constraints: [], blobId: null };
     };
 
@@ -230,12 +244,7 @@
         ...commonOpts.render,
         visible: true,
       };
-      body.plugin = {
-        color,
-        hasEntered: false,
-        entryCheckId: null,
-        shape: "gift",
-      };
+      applyBallPlugin(body, { color, shape: "gift" });
       return { bodies: [body], constraints: [], blobId: null };
     };
 
@@ -245,23 +254,13 @@
         ...commonOpts,
         chamfer: 0,
       });
-      body.plugin = {
-        color,
-        hasEntered: false,
-        entryCheckId: null,
-        shape: "rect",
-      };
+      applyBallPlugin(body, { color, shape: "rect" });
       return { bodies: [body], constraints: [], blobId: null };
     };
 
     const createCircleBall = (x, y, color, commonOpts) => {
       const body = Bodies.circle(x, y, config.ballRadius, commonOpts);
-      body.plugin = {
-        color,
-        hasEntered: false,
-        entryCheckId: null,
-        shape: "circle",
-      };
+      applyBallPlugin(body, { color, shape: "circle" });
       return { bodies: [body], constraints: [], blobId: null };
     };
 
@@ -273,20 +272,8 @@
 
     const createBallBodies = (x, y, color) => {
       const scene = getCurrentScene();
-      const ballPhysics = scene?.config?.ballPhysics || {};
       const debugSpawn = !!scene?.config?.debugSpawn;
-      const commonOpts = {
-        restitution: ballPhysics.restitution ?? 0.72,
-        friction: ballPhysics.friction ?? 0.01,
-        frictionAir: ballPhysics.frictionAir ?? 0.012,
-        frictionStatic: ballPhysics.frictionStatic ?? 0,
-        density: ballPhysics.density ?? 0.001,
-        render: {
-          fillStyle: color,
-          strokeStyle: "#0b1222",
-          lineWidth: 2,
-        },
-      };
+      const commonOpts = getCommonBallOpts(scene, color);
       if (scene?.config?.blobBalls === "soft") {
         return createSoftBlob(x, y, color, commonOpts);
       }