Since you want to give your girlfriend a surprise on Christmas, you might as well buy some small gifts and hide them in the Christmas tree. If you don’t have the conditions, you can also hide them in the Christmas stockings and let your girlfriend guess where they are.
Since it is a surprise, you should give some more creative things, such as engraved makeup mirrors, rings, name necklaces, crystal music boxes, etc.; if you want to pursue innovation, you can also give your girlfriend a creative crystal ornament that can be embedded with photos, which is also very romantic. On Christmas night, giving a sunshine jar that emits a faint warm light is also a good choice. 22-year-old girls generally like some cute things, so why not give her a cute cartoon bouquet, and then match it with a box of DIY chocolates, which is very touching.
When giving a gift to your girlfriend, first of all, your own thoughts are the most important. The gift does not need to be very expensive. When giving a gift, you can also attach a few sweet words. Beautiful gifts plus your romance, your girlfriend, will she be very happy!