[ Seems he's ready for this 'hauling the magi' game, easing his knees and moving on them along with the tugging. All to be comfortable straddled onto the lap, as he added a few things to be delivered in... Maybe a couple hours, to serve as a bit of a break? That should work. ]

Are those things usually used for magical foci? If it were so easy, I should use your body for casting.

[ Because the little micro-magical expressions weren't counting towards all that. Mm, he feels that hand, too. The warmth as it plays with the waistband. Teasing the touch by shifting his hips to the side and back, not at all shy about the friction with it, that might actually make it even easier to feel that there really wasn't anything underneath the loose trousers. Something simple, easy to discard, with the benefit of suiting his overall figure while it lasted on him. ]

Generally, it's gotta be designed for spell casting. Wands 'n' staves, usually.