t-shirt quilts ARE NOT HARD! they are actually quite fun to make- and not difficult at all- simply use a fusable lightweight tricot interfacing---available from stores like joannes- quite inexpensive-by the yard.
do a t=shirt quilt search you will see tons of them- there are a dozen or so commercial patterns for them- plus all the ones people just make without using a pattern- but do not (think) difficult---they are not. use a needle made for knits, a good thread, i'm sure there are probably even a number of free tutorials on them.