In the world of toy collecting, few subgroups are as selective as the designer crowd. For these fans, toy creators are artists, and a toy's form is just a virtue of its function — being rad. Expand your toy horizons tonight at Poptopia (4126 Pennsylvania) when the store holds its trading party. The event gives collectors a chance to network with the broader metro designer-toy community, swap unwanted toys with fellow enthusiasts, shop the stock, and meet area toy designers Jeremy "Mad" Madl and Donald "Scribe" Ross. For every $15 that shoppers spend, they receive a raffle ticket for prize drawings. The party kicks off at 6 p.m. and lasts until 8, with prizes announced at 7:45. Admission is free for all ages. See poptopia-online.com or call 816-931-9800.