Today at lunch was blistering (still 88-degree at 7:00 PM), using my regular stack up of extension tubes and lens (Nikkor 105mm f/4 Micro AI manual focus lens + 27mm + 20mm + 14mm + 12mm extension tubes) - I was without my homemade diffuser. These were shot with an off-camera flash with a modified soft box.
Captured this lightning bug (Lampyridae) image this evening utilizing my DIY flash diffuser/soft box/snoot.