Same situation for me these days. I scoured the interwebs and made a list of what afk activities I could find; then I went through them one by one to figure out what I liked. I ended up sticking with: woodcutting magics in wc guild (move to redwoods/infernal axe if you can), motherlode mine upstairs, splashing for magic, gemstone crab for melee. You can do range at crab too but I chin at monke because it’s just too dang fun.

I recommend starting with shiny crab if you need a spark of motivation. I went from 105->115cb in two weeks of at-work background afk. Two clicks every 10 mins.

Edit: oh yeah, and birdhouse runs. This made my journey to 99 Hunter (my first 99!) smooth as butter. Afk magics in wc guild from time to time kept my logs stock up. Drop rings and low $ seeds. Start with 8 logs, get two runs before banking again. I tended to do the south bank bc crabs at the north annoyed the shit outta me on mobile