LF Recommendation: Exercise/Medicine Ball

This is super niche and just randomly came to mind today as I was working out. Looking for any doujins where a woman is on a large exercise ball. Either she gets fucked on it, shes bouncing on a dildo on top of it, or its just referenced/highlighted to recreate the motion.

Examples:

[Yumeki Banana] Three Days of Breeding With My Brother’s Former-Model Wife | ずっと好きだった元グラドルの爆乳兄嫁と種付け交尾しまくる3日間。 #601710 p44

C90) [BRIO (Puyocha)] Russian Chaku Ero Pet Club - Russian Weared Eroticism Pet Club (THE IDOLM@STER CINDERELLA GIRLS, Love Live!) [Digital] #668813 p6-9

[Satsuki Imonet] Chiteki Seikatsu [Digital] [Chinese] | [皐月芋網]痴的性活 [DL版] [饸饹面个人汉化] #549190 p58. "mOTHER" chapter p13 in english

Any others come to mind?