This is the same things he did last time isn’t it, if I’ve remembered correctly your last post?
I see what you mean about a poisoned chalice. If you keep them you’re accepting his gifts and feel like you owe him something, and if you give them back he gets contact with you.
A businesslike text saying you don’t want them and asking for an address of a neutral party where you can drop them off for him to pick up later? It’s tricky. Use the perishable stuff and put the non perishable stuff in storage to go back to him at a later date?
The feelings during this time, including terrible guilt (crazy, but we’ve all been there!) are awful.
Stay strong.