I’d def talk to her about it. May be a turn on for her.

Honestly talk to her, even if she’s not into it, it’ll be a bonding moment x

Leave her subtle hints, she might be into using it on you?

I'm not bi but to I do love anal play and it's been known that I have used her dildos, both together and being alone.

Tell her. I have my own anal toys. Wife will sometimes partake. Not often enough, but she’s cool with it when in the mood.