That's so sweet :) I agree, set a price limit and take him shopping. He knows her, so he'll know what she likes, you won't have to pick the gift out-- but retain veto rights. On a side note, you may want to doublecheck with her mom if he chooses lipsmackers or any other kind of cosmetic or lotion-y type gift, especially those sold in sets this time of year, for food allergies. If she has any allergies at all, best he choose something else.