Ah, I understand better now. I think I might know why there was such serious suction as to cause the kind of pressure you experienced. Ouch, that hurts. I'm sorry, sweetie. See, nuby is a baby brand, and at the point they start using sippy cups, which is insanely young nowadays, they need all that suction, to control the flow, so nothing goes down the wrong pipe. It may also make it so less spills out.
I'll be glad to look at cups for you, and silicone straws that don't have über suction, because they're meant for people who know already how to use a straw, and aren't still learning. Do you want something big enough to make your hands feel small? For me, it's the bigger and cuter, the better! What colors do you like? What characters and motifs? Cool Gear Inc. makes some truly cute stuff. I have a ton of it. It isn't super spill-proof, but some is spill resistant, and most of it is cute. Bubba has some silicone straws, and nice cups. Mixing and matching might be a good bet.
As far as toys, what do you think you might like? Are you a chime rattle person? I heard one on a YouTube video, so you can see if you like that sound. Are you a natural cuddler? In that case, how about a plushy? What characters and motifs do you like, or think you may like, again, this time, in reference to toys? Kinetic sand or Play Doh sounds good for you. You could make a sand and water table, as the height of a kid one maybe difficult for you to play at. Maybe kiddy musical instruments, like xylophones, or pianos? Make a drum out of kitchen stuff, that way, you don't have to buy one? Art supplies? You sound a bit like me, the way you love sensory play.
I'll do whatever I can to help, now that I understand better. Sorry about that.