End Game Ideas?

I just got the final armor and a really good weapon, I was wondering things I could do with my friends!

 

Just keep travelling to new planets and moons to explore, you may find something you never have seen before.

 

Get yourself 2 grappling hooks. Place one in each hand.

Play this while swinging around:

 

A mod which uses end-game items for fun purposes and doesn't add too much to the game.

 

Alternatively, beam down to a very low tier planet with yourself being decked out in the most OP gear you have, and hold the shift key and walk.

Effortlessly tear through the flesh of hundreds of beings to this:

 

A more serious answer:

Join a public roleplay server. Pretend to be a group of mercenaries, or maybe an ex-military squad. Roleplay is a lot of fun and really adds to the replayability of the game.