Unsure if anyone has found this already. But I find that in the garage, you can repeatedly climb on these boxes to quickly lose a lot of stamina. This is useful so that you can implement longer sleeps to skip more time during the downtime between drone deliveries!

I used this whilst I was trying to speedrun getting a single kerfur (Kerfur% possibly >->). But it is definitely possible to implement this in the more longer Omega Kerfur%

Replicated! Apparently, you now lose 0.5 stamina for every climb. And yeah, this is not severe exploit, but can be used to manipulate timings for 0.8.1b KerfurO% runs. Since you need to go to the cave now for quartz and sleeping there to get out. Nice job! UPD: It's also better to shift-climb workbench for more consistency