Please find below some useful information to help you with your home Taiko practice kit.
Other options that people have tried include, upturned bins from B&Q (other DIY stores are available!), spare tyres as they are minus all the taping shown in the videos and don’t mind your bachi possibly getting dirty (you can tape the ends of the bachi so they wipe off more easily).
You could just buy a regular drum practice pad and do what Michael has done to create a simple stand for it – see his pdf guide here. https://styin.me/practice-drum-setup