That's great! Keep in mind, there are a great number of tricks that everyone is already doing in the speedruns, so I would watch one of those to see everything. The two things that I posted above are currently not in use, but could become more common.

When viewing Celulith's speedrun of 41:41.30 A few of the established speedrun tricks are:

Falling Bear Trap - 7:22 Tire Jump - 8:20 Worm Animation Skip - 14:12 (at 3 points in the game, you can skip the worm animation by pressing left) Sliding Box - 30:12 (here you do not have to activate the magnet, but can jump properly and make the ladder) Rotating World Jump - 35:22 (As the boulder falls to the left, you can make a running jump for the ledge and skip this section) Big Block Glitch - 41:00 (my favorite trick, you can magically flip through the box if you stand next to it as the gun fires upon you.)

And here is an old trick that I worked on. I never published it before today, but it's really difficult, so it probably won't make it into speedruns.

I've found a time saver at the Large Gear that should help. When pulling the box back, take 4 steps, press forwards, and then pull back again.

You might be able to use this trick when pulling back on the box before this one too. I haven't tested it out yet. Good Luck.