Expensive gifts

My boyfriend and I live pay check to pay check. On Valentine’s Day we got each other an expensive gift. He got me an Apple Watch and I got him AirPods. Well ever since he got the AirPods he has been letting the 10 year old use them. And she leaves them every where. Which pretty much leaves me to looking for them all day because if you leave them on the couch the 18 month old is going to grab them. I woke my boyfriend up from his nap today and I was like can you please come look at this and I showed him his AirPod case on the floor and the missing AirPods. And I told him that they were left we’re the baby could reach them and now they are missing and this isn’t the first time and I’m tired of having to find them. And my boyfriend just yelled at me for waking him up over something stupid and the living room was a mess and that’s why I couldn’t find them. My son and the 5 year old had been playing so yes there was toys everywhere. And like the other day I went to meet my family for my sisters birthday dinner and I passed by my boyfriends favorite store and they hade a huge sale sign on the window so I ran in and grabbed my boyfriend two shirts. Which I had to put on the credit card because I didn’t have money in the budget for two new shirts but they were my boyfriends favorite and I didn’t want to pass up them being 60% off. I came home the other day and his son was wearing one of them. Am I just this not used to living with kids or would this annoy anyone else because I’m starting to get very frustrated here.