This is a very specific online shopping niche with significant scope for monetization.
Starting a blog on personalized gifts online can help turn your passion into a profitable venture. You can monetize the blog through affiliate marketing and/or by selling personalized gifts through your own online store.
There are endless possibilities and it may be very satisfactory if this helps you turn your hobby into a successful business. So, start a blog on all things personalized.
Blog Name Idea: PersonalizedGiftsOnline.com