DIY ORAL TOYS ??

To start, let me mention that I don’t own any toys. My bf has a vibrating cock ring and had a small vibrated that he’d use on me ... but I have none. I still live with my parents and share a room with my sister who is 3 years younger (I’m 25 ... don’t judge) ... ANY WHO .. I’m too nervous to buy toys and then have them discovered, I’ll wait until I’m moved if lmao .. but the other day I was thinking about it, and yah I can finger myself or use something else, but I LOVE getting eaten out .. so I thought, there has to be a toy out there that mimics that ... and of course there is .. but again, I’m too nervous to own one while I’m still living at home .... so my question to all of you is ... has anyone used anything around their house that mimics a tongue?? would love to find something I could use!