Mastubating

So I'm like 14 or 15 and I want to masterbaut but I don't have a vibrater and my fingers don't work, all my hairbrushes have a smaller handle, shower cap is satisfying but I can't be in there for a hour because someone will have to to use the restroom or tell me showers don't take that long, humping a pillow feels good but doesn't work, and I share a room with my sister 🙅 who stayes up all night or wakes up randomly for water and I like to move my clit around but it takes longggggger for my to get turned on and I can't do it in the day time cause usually my family is all up walking around barging in cause I don't have a lock on my door. 😭😭😭😭. What can i do to masterbaut?