In this decor we used practically all thematic toys that we had. We've added wooden construction stuff, that is fully handmade: decorative pallets may be used for a pile of foam bricks, we took trolley for decorative bags (it can be party favors), instrument board and toolboxes bring the feeling that you are in a workshop. It's a fine idea to put lots of popcorn for example in toolboxes. For such under construction cake just a piece of parchment paper is enough. Also add this thematic party with construction barriers and put suitable sticker on your dispenser. That big yellow sign is made from cardboard and can be used for placing there necessary birthday number/name or phrase.