What would be the current cheapest best way to store like 0.10BTC at a time.

Looking for the cheapest way and it doesn't have to be collectible, just something easy for me to load and unload if needed or possibly for long term storage.

What few bitcoin coins I do have left I actually buried along with a few other things before hurricane Irma came through. The buried container did surprisingly well and survived.

Any current suggestions would be great.

Thanks