Website related:

100 more website ideas -- basically what it says here, it's the second one because I find this one has more intresting ideas.
Firefly graphics -- Banners, dividers and the like. These are all mostly fandom centric, but not all.
Font generator -- A text generator with loads of fonts, my personal favorite is bleeding cowboys.
Image borders -- pretty image borders!
Neko!! -- Look at them!!!! Why wouldn't you want one of these cute cats on your site.
Ezgif -- gif creating, cropping, or even censoring. makes it a hell of a lot easier to work with gifs.