However, what we love about this furniture item isn’t just its storage capacity and budget-friendly price tag. We’re also majorly enthusiastic about all of the DIY possibilities for you to customize Billy bookcases and make them look even better. For instance, you can paint an IKEA Billy bookcase to match the rest of your decor. Or you can make Billy bookcases look built-in and expensive by attaching multiple units and adding trim. There are hack ideas for short Billy bookcases, Billy bookcases with doors, and more. Keep reading to check out 25 brilliant IKEA Billy bookcase hacks that will make you want to get DIYing right this second.