One of the projects which is coming up for me is designing a wireless charging option. I hope to simply plug the signal generator into my circuit in order to manipulate shape and frequency of the primary coil, so I can get a feel for how things work and for optimizing what type of signal/frequency my final circuit should have...
(I haven't really figured any of the details out though. I am very much a learning by doing type of person.)
I have a slight budget for this, thats why I thought I might as well buy something which lasts.
So yeah... still open for suggestions 
And I will google Textronix
Cheers
p.