any good ideas for gbc mod?

[exodusrevelations]

I didnt know weather to put this in the legacy consoles or the handheld nintendo category cause its kinda both.  But i am aquiring a gameboy color tomorrow and i have been thinking constantly for ideas to do to it but i cant really think of anything.  I know i can put a backlight in it but thats about all i can think of besides remapping the buttons but considering a gbc only has 4 buttons besides d pad i think its kinda pointless.  Anybody got any ideas?