Ive got more swaps if anyone has any new ones - need about 100 to fill the boys 3 books, so feel like we're nearly there!
To offer, we have:
9, 13, 19, 29x2, 57x2, 61, 77x2, 86, 89, 92, 96
109, 114, 119, 128, 131, 134, 156x2, 157, 175, 178, 180, 183, 199x2
209, 226, 227, 228, 232, 238, 241, 243, 254, 263, 267, 271x2, 274x2, 278, 279, 285, 289, 297x2
303, 305, 311, 313, 314, 321x2, 324, 327, 332, 333, 345, 348, 359, 366, 367x2, 368x2, 375, 378, 379, 387
401, 403, 421, 424, 427, 432, 439, 445, 451, 453x2, 462, 466, 470, 472, 476, 479, 480, 483, 492, 495
500, 503x2, 504, 508, 518x2, 520, 532x2, 537, 539, 553, 558, 563, 575, 578, 583, 586
604, 606x2, 613x2, 618, 621, 625, 634x2, 636, 637, 647, 653, 656, 663
@Waveifyouknowme - we got 9 stickers from your 11 packs today - better than holding onto doubles we don't need and now have new doubles to offer, so great idea (if doing it again though, I'll need to remember to ask for a number divisible by 3 as one boy was most put out that his brothers got an extra packet compared to him 
)