Wall Lighting

Can Someone Guide Me As To Where I Can Find Wall Lighting That Would Work On Power Cord And Can Be Placed Anywhere In The Room In Chicago?

I Have Lighting In My Room And It's In The Corner Due To Which The Room Is Not Bright Enough. I Want To Purchase Something For Walls Which I Can Use Anywhere I Want By Plugging It Into Outlet.

I Repeat, I Am Not Looking For Something Which Would Work On Fixtures But Rather Something That I Can Attach Anywhere On The Wall In My Room By Plugging It In.

Thanks.