Random one... I don't even know what to search for these... but we're off to a bonfire next Friday which will be very busy, and of course very dark. My DSs aged 4 and 6 occasionally like to run off, especially the 4-year-old. So I'm slightly anxious about them being in dark crowded spaces. I want to get some light attachments or something that lights their clothing up, basically. Don't even know what to call them! Any ideas on decent products? Ideally Amazon tbh.