Okay then, what about my experience of yesterday. I was providing combined tower and approach control in Class G. The airfield VOR failed. Some hours later the colocated DME failed. I was fortunate to still have an airfield NDB which I used to hold aircraft, and also to provide standard separation and also for instument approaches. I had several IFR inbounds/outbounds and overflights. This was a mixture of scheduled public transport flights and GA traffic. The weather was solid IMC. At one point I had a stack up to 8000 altitude HOLDING on the NDB AND making NDB approaches. I had 5 TBM700s holding on the NDB at one point. If you think you'll never be asked to hold on an NDB and fly a subsequent approach, think again.