Inflatable standup paddleboards are perfect for on boats, but some can still be pretty big for storing easily. This SUP folds down to half the size of most other inflatable paddleboards, and at 9 feet, 6 inches long, it’s suitable for paddlers up to 210 pounds. Its backpack includes a pump, five-piece paddle and fins. Compact SUP, $1,900, www.redpaddleco.com