Improvised weapons are no longer rare or difficult to build. With knowledge-sharing more accessible than ever, the threat posed by do-it-yourself Improvised Explosive Devices (IEDs), Small Arms and Light Weapons (SALW), and Uncrewed Aerial Systems (UAS) continues to grow. On 8 December 2025, the United Nations Institute for Disarmament Research (UNIDIR) will host a high-level