Wǒ mā guò shēngrì, wǒ sòng le tā yí ge jiǎobù ànmóqì.
For my mom's birthday I gave her a foot massager.
Tips
usage
按摩器 is the catch-all term for any massage gadget. Common compounds: 颈椎按摩器 (jǐngzhuī, neck), 肩颈按摩器 (jiānjǐng, shoulder-neck), 眼部按摩器 (yǎnbù, eye), 脚部按摩器 (jiǎobù, foot), 筋膜枪 (jīnmóqiāng, massage gun / fascia gun).