If you don't have the terrarium yet, I would suggest getting a real bird cage. Dr. Foster and Smith has some excellent cages(and great toys too). I got a huge cage for under $50 for my parakeets. Then I think terrarium, I think glass enclosure(the fancy exoterra ones specifically with the opening front windows) or I think the mesh ones.
Now that I think of it, birds are kind of destructive, so the mesh terrariums would probably not be the best. There is a reason there are so many toys available for them to SHRED.
My Mokey(who I miss terribly) was a DEVIL of a parakeet. She drew blood on three people the night they brought her home for my birthday(I wanted her so it wasn't a "surprise"). I loved her. I doubt she loved me, but she at least liked playing in my hair, and after a while, we hardly ever had to keep her cage shut. That gave me much more room to decorate with toys.
For toys, I do not like mirrors. At all. Until I introduced her to Angel, and for some time after, she was VERY hard to wean from her favorite mirror. The addition of many more bells and windchimes helped her. They seem to get very dependent/addicted to the mirrors, and I don't reccommend them.
(Love Birds, btw, have ear splitting shriek/whistles. Imagine the annoying kid with the whistle standing right next to you. EEEK EEEK!!! )