Toronto, Canada-based toy and entertainment company Spin Master is expanding its collectibles offerings with two new brands—toilet-themed line Flush Force (pictured) and skater-centric Tech Deck Dudes.

Flush Force features 150 different creatures from Flushville, all of which were mutated by toxic sludge. To reveal if a character is common, rare or ultra-rare, kids must fill the toilet’s tank with water, shake it up and peel away the seat cover. The world of Flush Force will be further explored in a series of webisodes available on YouTube.

Tech Deck Dudes, meanwhile, is a squad of mini-skaters belonging to a number of different crews. The collectible line’s first series features 11 crews—including the Brainy Bunch, the Ninja Squad and the Ghost Gang—and more than 70 characters.

Additionally, Spin Master will launch a number of new themes within its Hatchimals Colleggtibles line, and updated content that expands the world of Hatchtopia is available now on the brand’s YouTube channel.

The new launches come as collectibles continue to lead growth for the industry. According to market research firm The NPD Group, global toy sales grew by 1% to US$20.7 billion last year, driven in large part by collectibles. The global collectibles market reached US$3.9 billion in 2017 (up 14%) with growth led by MGA Entertainment’s L.O.L. Surprise! line, LEGO Minifigures and Spin Master’s Hatchimals brand. In fact, NPD reported that collectibles made up around 8% of total industry dollar sales in 2017.

Flush Force, specifically, is also making a splash by playing on the recent trend of toilet humor. In November, Florida-based toy company Basic Fun! launched the Poopeez brand, with a toy line featuring collectible characters sold in blind capsules that look like rolls of toilet paper. There will also be a toilet launcher and a potty-themed collectible case.