As a sleep consultant, I always suggest maintaining “Quiet Time” when naps begin to ebb. It encourages independent play, but it also allows them to rest and even nap if they wish.
As a parent, I NEED Quiet Time. A few minutes to myself to “regroup” is enough to recharge my parent batteries.
When I can keep my daughter interested in something interesting, quiet time is much more successful.
Felt boards are fun and quiet. It’s a great way to foster imaginative play. We have super girlie and very pink/purple ballerinas. There are lots of options from Creatology, which they carry at Michaels. We always seem to get flyers that include coupons for 40% off (check the front of the store for flyers, or if you can’t find one, I believe you can join a email list and they’ll offer you the deal).
There are a tonne of options available from Etsy as well!