This site has a lot of suggestions: https://www.recyclethis.co.uk/20090126/how-can-i-reuse-or-recycle-old-window-blinds/comment-page-1#comment-1102139
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I have seen them repurposed as a weaved headboard which looked great.
Cut the slats in half and make garden/yard signs. You can nail or staple one or several to a wood stake, cheap in a bundle at home and garden stores. Suggestions: Boo!, Santa’s Toy Store, 696 miles to Phoenix, Welcome!, Ring Bell, Smile for Camera!, It’s a Girl!.
Hi Katherine, here is a link to 15 ideas for reusing these blinds