First place all the possible curses on your items(Vanishing,binding...), to lose all.
The next thing to do is build a dirt house:

This looks bad. Now take your things and break the bed to lose it better, if you find a cliff, fall and die(Also take a horse armor!), this will make you lose all the items, later, when we covered offline stuff, let's talk about servers.

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If PvP is enabled, build a giant dirt house and spam your coordinates, every griefer will come to you to destroy your house and kill you.


Later, change your weapons to a single rocket launcher , they are the worst weapon with precision and in long distance didn't reach.