Some idea at 8/10:
1. New idea about the "machinery", or called machinery sex. As i long time ago mentioned before, use some item for "help".
2. Similar to the first point above. The tentacle can small, detachable, "parasitic" inside the other things and control it, machine may do the trick. Appoint one of you tentacle as usual to infect a machine and functioning it. Then do you job as usual, but working with some machine this time.
3. Similar to the second point above. The item not just only machine, equipment also. Those "item" usually storage inside the locker, you can ignore it when you infect that locker, or full infect with "item". Different rooms may have different items, but some of that were common in every room. Machine can enhancing you locker, if power cord connected, all functions of this machine are available. Machine operating may cause a certain degree of noise, to attract attention.
At last, a strong suggestion, hopefully this game can be selling in Steam platform. Steam is allow the game with adult content, also selling the game in Steam can be more easier to promote.