Wooden Venetian Blinds Slats (Horspath OX33)

Hi, I need some 5cm wide wooden blind slats to use as packing strips to level out a wooden floor. I've used some old slats that I removed when I reduced my own blinds in length. The slats must be real wood and 5cm (2") wide to match the width of the joists and be as thin as possible. If you've reduced a set yourself or have an old faulty Venetian blind you want rid of I'm happy to collect.