It seems Jabba had learned from failure. He’d prepared a more practical ice cube tray to hold Halo Solo in Carbonite, and there is an additional ice tray for the cute R2-D2.
As we can see from the two images, these are two Star Wars themed ice cube trays themed by R2-D2 and that classical box: Halo Solo in Carbonite. Both them cube trays come from Kotobukiya, a Japanese toy manufacturer. The gray ice cute tray has 7 Halo Solo in Carbonite shaped cubes, one large and six small ones. Another blue ice tray comes with 5 R2-D2 shaped cubes, one of them is also bigger than others. Each ice cube tray is made of silicone material so that it can repel heat and ice. Of course, most importantly, you can get frozen R2-D2 and Han Solo.