What are things every scaper should do before retirement?

I stopped played a couple months ago because of miscellaneous real-life responsibilities and I am contemplating one last return to the game. Most of us are a lot older now than we started playing so I am sure many of you can understand not having enough time to play. That being said, I want to make time for a last hurrah. I will have members and maybe 4-5 months to play. What should I do with it? Any suggestions are appreciated.

Just a little information about my character:

--Stats overall mediocre. I have a 99's in fletching and thieving which I got as a bucket-list goal to have a trimmed skillcape. I was working towards 99 fishing when I quit so I might try to get that cape.

--Combat level is somewhere in the mid 70's so I can't really do anything involving pvp or pve as my account is primarily a skiller.

--I am open to doing quests, particularly good ones I might have missed. I completed desert treasure and legend's quest back in the day but I might do them again. I have never done recipe for disaster so that is probably something I will look into. Also, the regicide questline is something I never got to do that would probably be cool (never went to the area with the elves).

--As far as minigames the only ones I have really done are pest control, fishing trawler, and castle wars.

Inb4 the "I won't quit for real" posts. You are probably right, but I would like to feel some sense of completion in case I don't get a chance to go back (which is a very real possibility at this point in my life).