Introductions discussion

Hello everyone… my Wife has taken control of our household and i have never been happier or more in love with Her. i am naturally submissive but we haven’t really done much beyond occasional play sessions. Now i handle all the chores and whatever else She wants. I’d like to deepen things a bit by introducing chasity into our relationship. Currently, my Queen and myself agree that i will not touch myself or do anything without permission. However, this setup won’t last forever; after just one week, i am going mad. My question for all you experienced folks is what’s the best approach to finding the right device? I plan to discuss it with my Queen soon but want to learn as much as possible beforehand. Since i’m on a budget, i can’t keep testing different devices until luck strikes. thank you in andvance for any guidance.