Ok, so I must read some stuff about buttplugs and it has me intrigued.
Does having a plug in make women’s orgasms stronger, and easier to achieve?
Can a man feel the difference in her vagina if she has a plug in?
This might be a bit of a reach, since first you have to actually be having sex to start out with. I’m trying to make sex so overwhelming ecstatic that my OH will want more. I’m hoping the buttplugs might help with that.
I can feel the plug when im inside my wife and she feels the movement of the plug as my dick moves back and forth in her pussy. In addition i move it with my hand.
That depends on lots of factors. The increased excitement for me comes partly from mental arousal (it feels more naughty) and also from a sense of fullness which I find pleasurable and exciting. With the right angle / movement, I can hit my g-spot from anal with dildos and sometimes with butt plugs. I think my orgasms are stronger/ easier to reach but this is mostly due to the mental side of it. If your wife is excited by the idea and enjoys the way it feels then she might find her orgasms are stronger but if she isn’t very comfortable with the idea, is anxious about it or just doing it because she wants to please you then it might have the opposite effect.
Yes, from what my husband tells me, it feels tighter and obviously you would feel any vibrations if the plug is a vibrating one.
I would say though, I would talk about this carefully before buying / showing her the toy. Anal play is great but it’s not for everyone and lots of people don’t want to try, psychologically it doesn’t feel right to them and that is fine and should be accepted and their choice respected. If you don’t want a negative reaction, take it slowly and discuss it before buying one and maybe choose one together if you both decide you want to try.
I can’t see us shopping together for a buttplug. She seems to be somewhat interested in toys, but if it was up to her we would likely never have or use them. It’s a struggle just to get her interested in any sex play.
I think you need to respect her thoughts and feelings, especially when it comes to sex and toys. It’s best to let her adventure at her own pace.
Buttplugs are definitely not something to jump straight into, it’s better to use a small vibrator or bullet.
But to answer your question about plugs, it will usually narrow the vaginal canal so it wilL make her feel “fuller” and you will notice it will be slightly tighter. The sensation of both anal and vaginal simulation can be a great combo, but you really need to make sure no mental barriers are in place. For anything anal you really need to be relaxed and prepared.
Im basically going to echo what others have said
You need to have a conversation with her about this first, as she needs to feel relaxed and comfortable with the situation.
Going back to your question, yes as a woman (wife) I do feel the difference when I have a butt plug in
My orgasm is much more intense and hubby does say it feels tighter for him too, giving him a more intense orgasm
I enjoy having a butt plug in, but saying that i also enjoy anal which is a whole new level of sex, but would go down that route just yet
You definitely need to speak to her about it first before buying a butt plug and presenting it to her. I had bought one for myself without saying anything to hubby but never used it. He then out of the blue said he wanted to try it so i gave him the one i had and ordered another for myself we set a date to try them but hubby backed out so we never got round to it as he said he didnt think it was right.
My one and only experience of anal was traumatic, my sister recently disclosed to me that she had a similar experience to mine herself, turns out her boyfriend at the time was bisexual and she didnt know. As you dont know about her previous relationships tread carefully.
My wife definitely has stronger orgasms when she is wearing a butt plug and her vagina definitely feels tighter when I’m inside her.
Sometimes my OH struggles to orgasm lately. I think a plug might amp up the stimulation and help her over the edge . I’m not just going to get one and throw it at her and say , here, put this in. That said, if I didn’t make some moves around making our sexual life better, either with toys or lube, even trying to increase the amount of time we spend doing it, she never would. I can drop hints, but unless I’m VERY direct, she doesn’t get it. On any given day the absolute last thing on her mind is anything to do with sex.
For me when I’m plugged and also engaged in my vagina it feels great - but naughty which heightens pleasure
Only if the plug is in her 
it depends .. on her anatomy, on your anatomy and the size of the plug. But in general, yes. The wall between the rectum and the vagina is thin ( with some fat cushioning ) so you can feel some pressure from a decent sized plug. If she can tolerate a vibrating one …
As for how it’ll make her feel, I’m not the person to ask. That’d be your wife.
Now I just need to convince her to actually try one. That might prove interesting.