Carter was 21 months old when Landon was born.
As a new baby Landon spent a lot of time in his travel swing. When I was fixing dinner his swing would be on the counter (which is rather wide; so this for sure won't work in ever house).
Carter wasn't allowed to hug Landon for a long time. (Hugs are too physical and hard for such a little boy to give to such a little baby) Kisses on the head are much safer.
Landon had tummy time while Carter was in his high chair.
We also got Carter a chair similar to Landon's swing but with a higher weight limit so that Carter could sit in his chair while Landon sat in his and now they both take turns sitting in Carter's.
And of course I would ask Carter to be a good helper by getting Landon's diapers and wet wipes etc for me.
What things did you do to keep your baby safe while keeping your toddler involved and happy?