This ビッグバン★セオリー/ギークなボクらの恋愛法則 screencap contains
キッチン.
There might also be
ストーブ, 台所のストーブ, レンジ, キッチンレンジ, 調理用コンロ, コンロ, 台所用レンジ, 範囲, かまど, キチネット, and 簡易キッチン.
Sheldon mentioning Penny in the series finale of "Young Sheldon" doesn't automatically imply Leonard's demise in The Big Bang Theory. Speculations about Leonard's death arose from a casual remark, but there are numerous plausible explanations.