I recently pick up an ETS PSK. IMHO, the duct tape and pencil seem to take up a disproportionate amount of space in such a small kit. I am thinking of cutting the pencil waaaay down and reducing the amount of duct tape and adding water bags (Gerber milk bags) and Micropur tabs.

On a more positive note, the whistle is very nice... flat and loud.

Any other thoughts?