here are some of the things we've bought:
6-9months $8.99 from Zulily
12months $11.49 from Zulily
18months $8.99 from Zulily
18months $9.99 from Zulily
6-9months $12.99 from Zulily
https://ecx.images-amazon.com/images/I/51ixcOlrVwL._SX300_.jpg 5 pc Diaper bag set $22.99 from Amazon
https://ecx.images-amazon.com/images/I/41UTViw%2BUdL._SY300_.jpg Itzbeen pocket nanny timer $17.15 from Amazon
There have been other stuff. This is just some of our favorites.
Also, some friends highly recommended a movement monitor. They were only able to sleep well after getting it knowing they didn't have to worry. This is the one they recommended because it is small(smaller then a credit card) and clips right on the baby's diaper. It's expensive but we will be buying this for sure. Don't want to have to lose sleep worrying. They said it was like $120 at babiesRus but dh found it on Amazon for $91
https://ecx.images-amazon.com/images/I/418QcFx0v2L._SY300_.jpg Snuza portable baby movement monitor.