off white garments suitable for wedding

I don't know how to stop Minkxy from taking things she likes and burying them in her cat box. This is the 3rd time I found Gianni's Lego guys and there's still 2 missing for over a month now. I've found hair ties I threw out and even a few beer bottle caps. Idk how to get her to stop. She's a clepto and I'm tired of digging through a nasty cat box to find Genos's legos. Any suggestions? I've told her no, shoved her face in it, and even put them back where they belong after cleaning them. She's nuts with that cat box secret stash, wth! Even found a drill bit from my husband in there off white garments suitable for wedding :(