35mm – How to preserve undeveloped film

I am new to film photography; however, I recently had this strangle little idea to take some photos and just leave them undeveloped until I am nearing the end or my family is looking at them after my passing. I think the elements of surprise would be novel and the idea of being the first to see a decades-old memory captures some essence of photography to me. I was wondering if this concept would be possible to accomplish, however, given that film naturally has an expiration. Is there a means of preserving it to be developed decades down the road, or some esoteric technology that may be suitably used? Thanks in advance.