Double the black-and-white section with 50 more stickers

Animals (mouse, sheep, cow, elephant, monkey, lion, sloth, bat, spider,
hedgehog, shark, seal, caterpillar, pigeon, koala, squirrel), weather
(snowman, tornado, wind, icicle), food (toaster, banana, lemon, cherry,
pudding, teapot, hot dog, lollipop, carrot, milk), objects (scissors,
padlock, candle, fan, gears, stapler, faucet, trash, tv, cursor) and toys
and symbols (yo-yo, spring, Newton's cradle, drum, trumpet, bowling,
basketball, skull, question mark, puzzle).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

gen/bw/cradle/swing.js

@@ -0,0 +1,18 @@
+// Newton's cradle: the end balls take turns swinging out and clacking back while the middle three stay still
+const{sin,cos,PI}=Math,T=2*PI
+export const frames=20,delay=60
+const D=(c,f,a=11,b=4)=>{for(const[l,s]of[[a,'#111'],[b,'#fff']])c.lineWidth=l,c.strokeStyle=s,c.beginPath(),f(),c.stroke();c.lineWidth=7;c.strokeStyle='#111'}
+export default(c,t)=>{
+  const A=.42,L=104,P=44,sw=-A*sin(t*T)
+  for(const d of[-1,1])D(c,()=>{c.moveTo(128+d*96,40);c.lineTo(128+d*110,222)},14,5)
+  c.beginPath();c.roundRect(10,218,236,20,9);c.fill();c.stroke()
+  const k=t<.1?176:t>=.5&&t<.6?80:0
+  if(k)for(const a of[-.6,0,.6])D(c,()=>{c.moveTo(k+sin(a)*22,P+L-cos(a)*22);c.lineTo(k+sin(a)*38,P+L-cos(a)*38)})
+  for(let i=0;i<5;i++){
+    const x0=64+32*i,a=i==0&&t<.5||i==4&&t>=.5?sw:0,x=x0+L*sin(a),y=P+L*cos(a)
+    D(c,()=>{c.moveTo(x0,P);c.lineTo(x,y)},9,3)
+    c.beginPath();c.arc(x,y,16,0,T);c.fill();c.stroke()
+    c.lineWidth=3;c.beginPath();c.arc(x,y,9,PI*1.1,PI*1.5);c.stroke();c.lineWidth=7
+  }
+  c.beginPath();c.roundRect(22,28,212,16,8);c.fill();c.stroke()
+}