Pop-up Toaster is an inexpensive item that can be bought from the cheap items section in Nook's Cranny. You can also find it inside the balloons.
You can't craft Pop-up Toaster but you can buy it from the sellers below.
Source notes: Available in the re-buyable slot in Nook's Cranny
|Craftable: No||Customizable: n/a||Catalog: Yes|
|Source: Nook's Cranny||Size: 1x1||HHA Series:|