Caulk Tube Nail Plug

I don't do a lot of caulking but when I do the nozzles on my used tubes seem to always be clogged. Caps don't work, short plugs don't work, etc. The only thing I find that works for me are large long nails that I put into the end of the nozzle that extend down into the tube. My issue is that over time my nails tend to rust. I then end up waisting a significant amount of caulk each time just to get the rust infested part out of the tube.

These caulk tube "nails" are designed to solve the p