The interesting part of each of these happens after you close the tab: a brick model with a parts list to order, an Arduino wired by dragging nodes, and a PDF folded and imposed into a booklet you can actually print.
Upload a 3D model, get a buildable brick version and a parts list
→ bricksolvr.com
Wire an Arduino by connecting nodes, not writing code
→ microflow.vercel.app
Turn any PDF into a print-ready sheet, step by step
→ pdfpress.app