I got this 4. Dabble A Battery Pack Timer.
https://www.amazon.com/gp/product/B0CXKQBLS5/ref=ox_sc_act_image_2?smid=A2V03XUFHFCLT2&psc=1

Can anybody help me find one that Take D Batteries?

 

Hi,
https://www.lights4fun.co.uk/products/essential-connect-green-d-battery-box-with-timer