$25 and under gift No. 18: psychedelic coasters

Drinks and furniture: two essentials of daily living that do not get along. Even if your wood furnishings are limited to a curb-alert-sourced 10-year-old end table, the last thing you want after a rockin’ party is a constellation of water-rings added to your decor. Instead, save your surface (for now) with this psychedelic optical-illusory set of coasters from Loom (115 Seventh Ave.) in Park Slope. At $10.95, the set includes four rotating patterns that “create the illusion of expanding and contracting space.” Talk about a rockin’ party. Spin the colorful coasters with these babies, and you’re in for one wild ride.