Catapults!

Items in their inventory when the game ended, across 19 games.

Item	Games	Of all games	Win rate
Black King Bar	10	52.6%	30.0%
Blink Dagger	9	47.4%	66.7%
Phase Boots	5	26.3%	60.0%
Eul's Scepter of Divinity	5	26.3%	40.0%
Boots of Travel	5	26.3%	20.0%
Aghanim's Scepter	4	21.1%	75.0%
Linken's Sphere	4	21.1%	50.0%
Bracer	4	21.1%	50.0%
Power Treads	4	21.1%	50.0%
Aether Lens	3	15.8%	66.7%
Assault Cuirass	3	15.8%	66.7%
Radiance	3	15.8%	33.3%
Magic Wand	3	15.8%	33.3%
Shiva's Guard	3	15.8%	33.3%
Arcane Boots	2	10.5%	100.0%
Wind Waker	2	10.5%	100.0%
Vladmir's Offering	2	10.5%	100.0%
Observer Ward	2	10.5%	50.0%
Abyssal Blade	2	10.5%	50.0%
Manta Style	2	10.5%	50.0%
Butterfly	2	10.5%	50.0%
Bloodthorn	2	10.5%	50.0%
Daedalus	1	5.3%	100.0%
Swift Blink	1	5.3%	100.0%
Mjollnir	1	5.3%	100.0%
Observer and Sentry Wards	1	5.3%	100.0%
Quelling Blade	1	5.3%	100.0%
Soul Ring	1	5.3%	100.0%
Platemail	1	5.3%	100.0%
Sange and Yasha	1	5.3%	100.0%
Guardian Greaves	1	5.3%	100.0%
Circlet	1	5.3%	100.0%
Dust of Appearance	1	5.3%	100.0%
Refresher Orb	1	5.3%	100.0%
Boots of Travel 2	1	5.3%	0.0%
Heart of Tarrasque	1	5.3%	0.0%
Healing Lotus	1	5.3%	0.0%
Spirit Vessel	1	5.3%	0.0%
Iron Branch	1	5.3%	0.0%
Eye of Skadi	1	5.3%	0.0%
Tranquil Boots	1	5.3%	0.0%
Aeon Disk	1	5.3%	0.0%
Wraith Band	1	5.3%	0.0%
Battle Fury	1	5.3%	0.0%
Belt of Strength	1	5.3%	0.0%
Wind Lace	1	5.3%	0.0%
Shadow Blade	1	5.3%	0.0%
Yasha and Kaya	1	5.3%	0.0%
Sentry Ward	1	5.3%	0.0%
Overwhelming Blink	1	5.3%	0.0%
Hand of Midas	1	5.3%	0.0%