Theme for this month's pic set: Tubes (Patreon)

Hello all, I have thought of a theme for this month's pic set. Inspired by sci fi lab scenes, this month's theme will be 'tubes'. So it will be characters either bound, wrapped, vacuumsealed or encased in tubes. I am open to suggestions for any cute/beautiful characters to be put in those things. If you also have ideas on types of tubes to put the chars in, that's alright too. I will draw around 10 of them, and compile them as a reward for this month. Thank you