Skim Stones on the ice thay Make the most amazeing sounds if you puncture the ice away from the edge the sounds chages every time hours of Fun you must try it i havent done this in years must have a go when we freeze up round here ;-];-]
If you do let me know how you get on.... i all ways intended to record the sound Mikes in or on the ice ,,,,,,Never seamed to find the time maybe this winter !! ;-];-] Thick socks and a brandy seam to help !!!!! ;-];-]