The bumbo is one of those things that I could easily have done without but it has its uses. I think it's good for when we're interracting as a family.
When we sit on the floor in a circle and play a game with dd1 - The Orchard Humpty Dumpty game is the current favourite - we put Alic ein her bumbo and make her part of the circle. She appears more included than if she's in a reclined bouncy chair.
As I sais earlier, we also sit her in the bumbo on the table when we're eating dinner but that may change once the highchair arrives (we ordered it this week)
A couple of times I have sat the bumbo on the worktop counter in the kitchen, whilst I've been chopping veg. I know you're not supposed to and when I do it I am paranoid about it, even though it's obvious she's currently not able to move her weight forward in the chair or move the chair in anyway.
PC - When we moved Alice into her own room, we did so with the intention of coaxing her to sleep longer stretches. DH stepped up and agreed he'd rock her back to sleep if Alice woke up before 4/5 hours had passed. Up until then I'd fed her back to sleep and I knew she couldn't be hungry every two hours.
The first night she had her last feed around 11pm and woke again at 4am. DH rocked her for a bit and then after an hour, I realised I'd said I'd feed her if she woke after a 5 hour gap from feeding, so I fed her back to sleep.
I was fully expecting this to be the pattern for subsequent nights. I was happy enough to go to her room once during the nigth to feed her. But, the second night came and she didn't wake up until nearer 6am. Then the third night came and she slept until 7am!
So yes, I think moving my Alice to her own room, helped her to sleep for longer stretches. She occasionally stirs around 4am and goes back to sleep. If she wakes between 6 and 7am, I or DH bring her into our bed and I feed her. I hope that helps. I was amazed that it happened so easily.... but naps are not going well. She's currently asleep in her carseat in the living room and not in her cot where I'd like her to be.