Prosthetic limbs?

[He smiles a bit, suddenly reminded of Bucky. Perhaps what they say is right about time- it does seem to heal a lot of wounds.]

I know Alphys dabbled a bit in that herself. She helped a few people here in making some.

[His smile grows until it's a confident, beaming one.]

Absolutely! I think you can, too! You can only get better if you're working on perfection such as me.

[Look at that, he's sounding a bit like his old self again.]